William Walker Atkinson
Thought Catalog
Ralph Waldo Emerson
Marcus Aurelius
Friedrich Wilhelm Nietzsche
Marcus Aurelius
Niccolò Machiavelli
Douglas Preston & Mario Spezi
Gary Chapman
Adam Smith
David Deida
Marcus Aurelius & Gregory Hays
Fyodor Dostoyevsky
Plato
Barbara Ehrenreich
Various Authors
Sarah Wynn-Williams
Atul Gawande
Sun Tzu
Brian Goldstone
David Grann
Wallace D. Wattles
John Gray
Lucius Seneca
Henry David Thoreau
Neil Postman & Andrew Postman
Aristotle
Maureen Callahan
Brody Clayton
Patrick Radden Keefe