Introduction
You live in a secular world that often mistakes the absence of religion for the absence of meaning. Modern life leaves you isolated in arbitrary routines, longing for community and transcendence yet unable to accept supernatural dogmas that contradict modern science. You struggle to mark life's passages, celebrate time, or mourn loss without borrowing traditions you do not believe.
Sasha Sagan argues that you can find profound spiritual resonance in the genuine wonders of the cosmos and human biology. Science and the vastness of the universe provide a rich foundation for secular rituals, connection, and celebrating the fleeting miracle of existence. You can repurpose ancient rhythms and invent new ones grounded in astronomy and evolution.
The book guides you through birth, weekly habits, seasonal solstices, and death to build a grounded secular life.
- How can you mark time without religious calendars?
- What rituals help you face mortality with grace?
- How do you pass secular values to your children?
1. Science and Secular Celebration
Science and spirituality coexist because objective reality enhances the transcendent beauty of the universe without requiring divine dogmas.
Carl Sagan and Ann Druyan co-authored the book Contact, which contains the guiding family philosophy that for small creatures such as we, the vastness is bearable only through love. The author was raised by parents who viewed science not merely as a set of facts, but as a worldview and philosophy. Logic, evidence, and objective reality do not detract from the feeling that existence is transcendent. They provide the foundation for its magnificence.
Secular individuals do not need an afterlife or a god, but they require celebrations, community, and rituals to mark time and honor the rhythm of life.
Grandpa Harry announced his loss of faith to his father Benjamin in Queens after studying journalism at New York University in 1917. When Harry told his devout father Benjamin that he could no longer keep kosher or pray because he did not believe in God, Benjamin smiled and told him that the only sin would be to pretend. Authenticity in personal belief matters more than going through the motions of an inherited religion.
Beneath the dogmas of diverse religious texts and origin stories, human rituals fundamentally celebrate two core subjects: astronomy and biology. The changing seasons, solstices, equinoxes, and moon phases are products of planetary movement. Birth, puberty, reproduction, and death are universal human biological milestones. Societies with no contact with one another independently built celebrations around these tangible natural patterns.
The Improbability of Birth
Current scientific understanding places the big bang at approximately 13.8 billion years ago. Earth is more than 4.5 billion years old, and modern Homo sapiens have existed for a few hundred thousand years across roughly 7,500 generations. Between the infinite past and future, you get a brief lifespan of eighty to one hundred years.
The author reflects on walking around the city during her pregnancy, marveling that every wizened face she saw was once a baby. The genetic journey required for any specific individual to be born is an astronomically improbable feat filled with historical survival and chance encounters. Every person's existence relies on an unbroken chain of ancestors surviving plagues, wars, famines, and making specific life choices. Between European microbes and violence, Native Americans suffered a survival rate of 10 or 20 percent.
The author's grandparents Harry and Pearl met by chance on a New York City subway car of the E train in 1938 when he was reading William Faulkner's Absalom, Absalom! This statistical improbability makes the birth of any new human a profound, miraculous event worth celebrating beyond theological definitions.
Planting trees to mark the birth of a child is a tangible, cross-cultural ritual that connects new life to the earth and promotes environmental and social well-being. In Piplantri, Rajasthan, villagers plant 111 trees whenever a baby girl is born. This modern Rajasthani tradition began in Piplantri in 2006.
- Plant 111 trees upon the birth of a baby girl.
- Sign a legally binding affidavit promising the child will not be married off before legal age.
- Commit to supporting the daughter's education.
- Care for the planted trees together as they grow skyward.
2. Rhythms of Time and Seasons
Weekly habits and astronomical solstices anchor human existence, offering a secular framework for time, renewal, and community connection.
Weekly Rituals and Celestial Days
Weekly rituals provide a vital cadence to life. They allow you to check in with communities, process time, and anchor values. Across religions and secular lives, weekly checkpoints structure time. Time is otherwise too constant and elusive to perceive directly. Repeating intervals create a reliable rhythm for human existence.
The author describes how her mother took her to buy challah and a mint-iced brownie called a greenie on Fridays. They created paper-cutting worlds together on weekends.
In many languages, the names of the days of the week derive from planets named after pre-Christian gods. This reflects humanity's ancient, inseparable connection between celestial bodies, nature, and divinity. In Spanish, French, and Italian, Tuesday, Wednesday, and other weekdays explicitly share their roots with Mars, Mercury, and other celestial bodies. Quakers historically rejected these names to avoid paying homage to pre-Christian idols.
You can invent simple, playful weekly rituals to reaffirm core bonds and introduce vulnerability and shared purpose. A deliberate weekly practice lowers personal defenses and creates a steady anchor of connection.
After a memorable taxi ride in Washington, DC, where a charismatic driver from Sierra Leone insisted they must sing together to stay united, the author and her husband began singing the alphabet song every weekend. You can follow specific steps to build connection:
- Make eye contact at the start of the weekend or an appointed weekly time.
- Take a deep breath together.
- Sing the alphabet song or another chosen playful tune together to reaffirm connection.
Spring and Global Traditions
Seasons and changing day lengths are caused by Earth's axial tilt rather than our distance from the sun. Earth rotates at an axial tilt of about 23.4 degrees, causing hemispheres to receive varying amounts of sunlight throughout the oblong yearly trek around the sun. This tilt is likely the result of an early planetary collision that also created the moon. Seasonal shifts became vital for human survival and emotional expression.
Religious rituals like Passover can be adapted into secular celebrations that focus on gratitude, survival, and empathy.
Traditional religious holidays often contain dark narratives but survive because they provide comfort, art, and community. By adopting nontheistic versions of celebrations, you can honor history and freedom while focusing on modern ethical concerns. Maternal ancestors have marked spring for six thousand years. You can perform specific actions during these periods:
- Gather for a Seder meal using a secular Haggadah that celebrates life, wine, and freedom.
- Discuss modern plagues such as hunger, illiteracy, pollution, poverty, racism, violence, and war.
Diverse cultures across history have created spring festivals celebrating biology, renewal, and fertility. Spring celebrations share common themes of rebirth, often utilizing eggs, flowers, and fertility symbols. Examples include Nowruz in Iran, Sham El-Nessim in Egypt, the Spring Festival in China, Kanamara Matsuri in Japan featuring the Festival of the Steel Phallus, and the Roman Liberalia. Sham El-Nessim celebrations date back to at least 2700 BCE.
Families can invent their own meaningful rituals to honor personal milestones and natural changes. Rituals do not require ancient divine authority to be emotionally powerful. The author's mother invented a first-fruits festival called Blossom Day. They examined a dogwood tree for buds and had a tea party when the first blossom appeared. You can follow similar practices:
- Examine a tree daily after winter until the first blossom appears.
- Mark the arrival of spring with a dedicated tea party or celebration.
- Exchange gifts celebrating the return of warm weather and longer days.
Everyday actions imbued with personal meaning act as rituals that provide comfort, rhythm, and an artificial sense of certainty against uncertainty. Small repetitive actions help humans cope with the existential stress of an unpredictable future. The author's husband brings coffee in bed each morning, texts on the way when leaving the office, or says nightly goodnights to ward off death. Earth takes 24 hours to rotate on its axis.
Science can be embraced as a philosophy and a lens for viewing the universe, demanding tolerance for ambiguity. Embracing a scientific worldview means withholding belief in the absence of evidence and accepting uncertainty. Curiosity and the continuous search for answers replace sacred texts with encyclopedias and atlases. The author's parents responded to deep existential questions about death by joyfully stating nobody knows and looking up answers together in the Encyclopædia Britannica. You can adopt specific habits for this worldview:
- Withhold belief where there is ignorance and insufficient evidence.
- Consult reliable reference books and sources together to research unanswered questions.
- Keep a sense of curiosity about the world as a lifelong habit.
3. Atonement, Maturity, and Summer
True personal growth requires confronting error, embracing biological coming-of-age, and accepting our finite nature under the sun.
While ritual purification often stems from the religious premise that human bodies are inherently dirty or flawed, the author argues that the true original sin to atone for is human cruelty, xenophobia, and violence. Unlike religion, which often prioritizes upholding tradition, science thrives on error correction, where admitting mistakes and disproving predecessors moves knowledge forward.
The author describes a dinner in New York where she rudely humiliated a woman over unscientific tarot beliefs, later suffering pangs of guilt until she apologized and invited her to lunch to make amends.
Because human brains benefit from specified times to commit to difficult actions, the author and her mother propose March 4th as a secular holiday for atonement and self-correction, noting the phonetic pun to march forth and referencing March 4, 1953 BCE, when five planets aligned in the constellation Pegasus, prompting ancient Chinese astronomers to abandon old views.
You can adopt specific practices for personal growth:
- Acknowledge personal mistakes and things done poorly, selfishly, or thoughtlessly.
- Use a designated time or date to shake off what can no longer stand up to scrutiny.
- March forth bravely into the personal and philosophical unknown.
Error Correction and Coming of Age
Anthropologist Arnold van Gennep defined rituals as a three-step path of separation, a liminal transition phase, and eventual reunification. While coming-of-age traditions vary widely across cultures, they are all rooted in the biological reality of puberty, hormone shifts, and reproductive maturity.
Examples include Amish rumspringa, Apache pollen blessings, Maasai circumcision dances, Amazonian bullet ant glove trials for the Sateré-Mawé tribe, Vanuatu land diving with vines, and Jewish bar and bat mitzvahs.
Ignorance is not bliss, and true understanding requires facing terror and the reality of death head-on. By stripping away illusions and cognitive dissonance about the vastness of the universe and the inevitability of death, an individual can find genuine joy in the present moment.
The author recounts a terrifying experience in her late teens taking psychedelic mushrooms on a balcony, which triggered a severe existential crisis about the end of the world and the death of loved ones, eventually leading her to a deeper appreciation for the preciousness of life.
Ultraviolet radiation from the sun triggers endorphins in the human brain, creating a direct physical reaction to solar rays. Because life on Earth depends on photosynthesis and solar energy, cultures across history have created extensive pantheons of sun deities and built elaborate observatories to track solstices.
Historical solar deities include Helios and Sol in Greece and Rome, Ra and other gods in Egypt, Utu and Shamash in Mesopotamia, Amaterasu Ōmikami in Shinto, and Inti in the Incan empire, alongside monumental sites like Stonehenge, Machu Picchu, and Angkor Wat. The sun is a mass of hydrogen and helium formed 4.6 billion years ago, sitting 93 million miles away from Earth.
Light is extremely fast but not instantaneous, meaning that looking at distant stars or interacting with recorded media allows humans to witness the past. This scientific reality provides immense comfort when dealing with grief and the death of loved ones, allowing their light and voices to continue reaching the living. Three meters, or ten feet, is the distance at which light takes a hundred millionth of a second to reach an observer.
The author describes watching old VHS tapes and television footage of her late father hosting Cosmos, listening to a deceased friend's old cellphone voicemail greeting, and pondering how the air we breathe today contains gas particles once inhaled by historical figures like Julius Caesar.
You can observe the cosmos directly:
- Go outdoors on a clear summer night or during the solstice.
- Block modern views using a tunnel formed with your hands.
- Imagine the ancient world and the light that left distant stars eons ago while breathing the shared air particles of past and future generations.
4. Community, Mortality, and Winter
Questioning authority, facing human mortality directly, and fasting with gratitude ground secular life in deep biological solidarity.
Independence days and political revolutions stem from the same human impulse as scientific discovery. You see an unwillingness to accept authority on blind faith and a willingness to question established norms. True patriotism involves questioning leaders and using critical faculties rather than demanding unthinking conformity.
The author volunteered with at-risk teens and helped an isolated 15-year-old Orthodox Jewish boy from Brooklyn learn secular history, including evolution and world civilizations, sparking his intellectual independence and desire to escape fundamentalism.
- Ask your children and yourself why things are the way they are.
- Question your own preconceptions and consider if things could have gone another way.
- Use the Socratic method and devil's advocacy in everyday life instead of waiting for an appointed holiday.
Feast, Fast, and Death
Autumnal holidays and harvest festivals serve as cultural mechanisms that allow humans to confront the terrifying reality of death and darkness through joy, storytelling, and light. As days shorten and nature withers, humans have historically created rituals like Halloween, Día de los Muertos, and Diwali to transform the fear of mortality and winter into communal celebrations and playful outlets.
At age twenty, the author visited the Capuchin Crypt in Rome, a museum featuring six rooms ornately decorated with thousands of human skeletal remains bearing an inscription about shared mortality.
Fasting is a widespread ancient ritual found across many religions that can be adopted secularly to cultivate empathy for the hungry and appreciate abundance. While religious fasts have spiritual aims, they tap into biological programming and help break through modern dissociation from global hunger caused by the industrial food complex. In 2016, 815 million people were affected by global hunger, accounting for 11 per cent of the global population according to the WHO.
- Abstain from food for a designated period such as one day or specific hours.
- Reflect on the physical experience of hunger and the millions who face it daily.
- Let the realization fuel charitable giving, volunteering, and greater appreciation for food.
Gratitude for meals can be directed outward to the human laborers, farmers, and biological processes that make food possible rather than solely to a deity. Sasha Sagan and her husband practice saying thank you to farmers and fishies with their child, drawing inspiration from Shinto clapping rituals for the kami or Thich Nhat Hanh's mindfulness verses.
- Close eyes and bow slightly before a meal.
- Express verbal or silent thanks to the natural forces, animals, and human workers who provided the food.
The winter solstice is an ancient turning point that naturally calls out to be marked as the darkest night turning toward the return of light. Many modern winter celebrations, including Christmas, Hanukkah, and various global solstice traditions, were historically designed to co-opt older polytheistic festivals that honored the changing seasons, the sun, or agricultural renewal. Roman Emperor Aurelian decreed December 25 as Dies Natalis Solis Invicti to honor the sun god Sol, building upon earlier traditions like Saturnalia.
- Celebrate the winter solstice at midnight on the longest night of the year.
- Teach children using a globe and flashlight how the planet's tilt causes the return of longer days.
- Hold a late-night feast and exchange gifts to mark the transition.
Humanity's transition to ritualizing death marks a core aspect of our history, providing necessary structures for the living to process grief. Neanderthals began burying their dead in fetal positions forty thousand years ago. Bulgarian tradition involves forty days as the interval for repeated memorial posters.
- Place small stones on the graves of loved ones as a visiting ritual.
- Take turns shoveling dirt directly onto the lowered coffin to acknowledge finality.
- Participate in public mourning practices that allow for group catharsis and open weeping.
An individual's existence is a temporary wonder of the cosmos, and you live on through the memories, cultures, and lessons you pass down to others. Under best-case expansion scenarios, the last star is predicted to die a quadrillion years in the future.
10 Key Ideas
- Science and objective reality enhance the transcendent beauty of the universe, providing a rich foundation for secular rituals and celebrations without requiring divine dogmas.
- The statistical improbability of any individual's birth across thousands of generations and historical survival makes the existence of every new human a profound, miraculous event worth celebrating.
- Simple, playful weekly habits structure elusive time and create a reliable rhythm to reaffirm core bonds and introduce vulnerability and shared purpose.
- Changing day lengths and seasons are caused by Earth's axial tilt rather than our distance from the sun, inspiring adapted secular celebrations that honor renewal and freedom.
- True personal growth requires error correction and a willingness to admit mistakes, disarm dogmas, and march forth bravely into the personal and philosophical unknown.
- Ignorance is not bliss, and confronting the inevitability of death head-on strips away illusions, allowing an individual to find genuine joy in the present moment.
- The scientific reality that light takes time to travel allows humans to witness the past through old media and starlight, providing immense comfort when dealing with grief.
- Questioning established norms and authority on blind faith stems from the same human impulse as scientific discovery and intellectual independence.
- Autumnal harvest festivals and intentional fasting transform the fear of mortality and winter into communal celebrations while cultivating empathy for the hungry.
- Gratitude for meals and existence can be directed outward to the human laborers, farmers, and natural biological processes that make life possible.