- World of Ideas (10th edition)
- World of Ideas (11th edition)
Readings only in 10th edition:
- Emerson
- de Tocqueville
- Friedman and Friedman
- Thoreau
- Riis
- Keynes
- Feynman
- Wilson
- Kitcher
- Hsun Tzu
- Murdoch
All other assigned readings from World of Ideas are in both the 10th and 11th edition.