Conversation so far:
What was Warren Buffett's investment philosophy?
He is noted for his adherence to value investing.
How did Warren Buffett get into investing?
He was inspired by a book he borrowed from the Omaha public library at the age of seven, One Thousand Ways to Make $1000.
What were the expectations of newspaper acquisitions at Berkshire Hathaway?
Buffett explained that he did not expect to move the needle at Berkshire with newspaper acquisitions, but he anticipates an annual return of 10 percent.
Did Warren Buffett teach people investing?
Using what he learned, he felt confident enough to teach an Investment Principles night class at the University of Nebraska-Omaha.

Question: how much was he worth?
Self-contained rewrite: How much is Warren Buffett worth?