American Writer, Historian, and Philosopher. Winner of the Pulitzer prize for General Non-Fiction and the Presidential Medal of Freedom. 1885-1981

1. Speech

2. Fire

3. Conquest of Animals

4. Agriculture

5. Social Organization

6. Morality

7. Tools

8. Science

9. Education

10. Writing and Print

Images: Courtesy of Google Images and Ranking: Courtesy of

“The Greatest Minds and Ideas of All Time”

by Will Durant