I've Been to the Mountaintopby Martin Luther King, Jr.
The World's Religionsby Huston Smith
Waldenby Henry David Thoreau
The Princeby Niccolo Machiavelli
Free Lectures from The Great Courses
ReThinking Podcastby Adam M. Grant
Grammar Girl's Quick & Dirty Tips for Better Writing Podcastby Mignon Fogarty
NPR: Fresh Air Podcastby Terry Gross
The Daily Motivation Podcastby Lewis Howes
Frontline Audiocast - PBS Podcast
Mindfulness for Beginnersby Jon Kabat-Zinn
The Magic of Believingby Claude M. Bristol
Becomingby Michelle Obama
Greenlightsby Matthew McConaughey
Tools of Titansby Tim Ferriss