Edward Abbey Maya Angelou Aristotle Isaac Asimov Sir David Frederick Attenborough John James Audubon Marcus Aurelius Marc Bekoff Black Elk Tara Brach David Brower Buddha Albert Camus Rachel Louise Carson Jimmy Carter Chief Joseph Chief Seattle Pema Chodron Deepak Chopra Winston Churchill Arthur C. Clarke Paulo Coelho Confucius Jacques Cousteau Crazy Horse Marie Curie Ram Dass Leonardo Da Vinci Fyodor Dostoevsky Albert Einstein Ralph Waldo Emerson William Faulkner Jonathan Safran Foer Pope Francis Anne Frank Benjamin Franklin Mahatma Gandhi Kahlil Gibran Jane Goodall Al Gore Thich Nhat Hanh Herman Hesse Hippocrates Oliver Wendell Holmes Sr. Victor Hugo Aldous Huxley Steve Jobs Jon Kabat-Zinn Helen Keller John F Kennedy Martin Luther King Jr. Jiddu Krishnamurti Elisabeth Kubler-Ross Dalai Lama John Lennon Aldo Leopold Abraham Lincoln Henry Wadsworth Longfellow Luther Standing Bear Ramana Maharshi Bob Marley Chico Mendes Mother Teresa John Muir Isaac Newton Anais Nin Barack Obama George Orwell Osho Blaise Pascal Robert M Pirsig Plato Red Cloud Rumi Bertrand Russell Carl Sagan Sharon Salzberg Dr. Seuss William Shakespeare George Bernard Shaw Albert Schweitzer Michael A. Singer Swami Sivananda Socrates David Suzuki Shunryu Suzuki Sitting Bull Sri Chinmoy Henry David Thoreau Chogyam Trungpa Eckhart Tolle Harriet Tubman Mark Twain Neil deGrasse Tyson Lao Tzu Vincent Van Gogh Alan Watts Elie Wiesel Marianne Williamson E.O. Wilson Frank Lloyd Wright William B Yeats