The history of rebellion is rife with excess and burnout. But new generations have a distinctive commitment to be reflective and activist at once, to be in service as much as in charge, and to learn from history while bringing very new realities into being. Quaker wise man Parker Palmer and journalist and entrepreneur Courtney Martin come together for a cross-generational conversation about the inner work of sustainable, resilient social change.

In the 15 years since its inception, Wikipedia has become as much a global community as a business venture — a living organism with a mission statement to make “the sum of all human knowledge available to every person in the world.” And a conversation with co-founder Jimmy Wales — one of the architects of that philosophy and the world-changing project that has grown up around it — is full of surprises. What Wikipedia is learning has resonance for our wider public life — about the imperfect but gratifying work of navigating truth amidst difference, ongoing learning, and dynamic belonging.

The Brazilian lyricist Paulo Coelho is best known for his book, The Alchemist — which has been on the New York Times bestseller list for over 400 weeks. His fable-like stories turn life, love, writing, and reading into pilgrimage. In a rare conversation, we meet the man behind the writings and explore what he’s touched in modern people.

“When I’m running, I’m in my body, with all of its limitations but with all of its capabilities at the same time.” Mike Stavlund is the author of “A Force of Will” a memoir about the death of his 4-month-old son.

“His capability to ask the ‘What if?’ question opened the door to the deepest marker of humanity, and that’s empathy.” Physicist S. James Gates celebrates the scientific and social power of Albert Einstein’s imagination.

“Trauma treatment starts at the foundation of a body that can sleep, a body that can rest, a body that feels safe, a body that can move.” Psychiatrist Bessel Van Der Kolk on finding resilience in our bodies after trauma.

“If you watched me run, you wouldn’t think I was sitting or thinking about sitting.” Justin Whitaker is a writer, a ChiRunner and a Buddhist. For Justin, running is a part of his spiritual practice.

Xavier Le Pichon, one of the world’s leading geophysicists, helped create the field of plate tectonics. A devout Catholic and spiritual thinker, he raised his family in intentional communities centered around people with mental disabilities. He shares his rare perspective on the meaning of humanity — a perspective equally informed by his scientific and personal encounters with fragility as a fundament of vital, evolving systems. Le Pichon has come to think of caring attention to weakness as an essential quality that allowed humanity to evolve.

“When I’m running, I feel like I’m actively expressing gratitude.” Sarah Khasawinah works in the Senate to improve policies for older Americans. Her work requires focus and discipline, something that she also finds in her spiritual practice of running.

“I began to notice that my running life and my meditating life were beginning to merge.” Roger Joslin is an Episcopal priest and the author of “Running the Spiritual Path,” a how-to guide on running as meditation and prayer.

“When words bring you closer to the prisoner in his cell, to the patient who is dying on his bed alone, to the starving child, then it’s a prayer.” Elie Wiesel, the beloved writer known for his memoir of the Holocaust, “Night,” speaks of the power of prayer and forgiveness in the wake of profound suffering.

“My love for running started with me running towards my mom.” Mallary Tenore ’s mother, Robin Jo, introduced her to one of the defining practices in her life: running — which has been equal parts destructive, spiritual, and healing.

“If you’re sure about something, you don’t need faith. It’s when you have the doubts that faith kicks in. And that’s true in science as well as anything else.” Vatican astronomers Brother Guy Consolmagno and Father George Coyne on the joy of discovery and delighting in what we don’t know.

“Running challenges people to see me from a different perspective.” In Sikhism there is a duty to “hone the spiritual body in the same way that we hone our spiritual selves.” Simran Jeet Singh holds that in his practice as a runner.

“How in our daily lives are we connecting with ourselves and everything around us? Because that’s where real, energetic transformation comes from.” Feminist playwright Eve Ensler speaks of the affirming physicality of our bodies, and of finding true contentment in the lives we already lead.

“I cannot even begin to push myself to the extent that God can help me to push myself.” Christy Marvin is the mother of three boys and a mountain runner. She’s won six different Alaska mountain races. For Christy, running is a spiritual practice.