Rivka Galchen:

The main way you move forward in science is by finding out you were wrong about what you thought you already knew.

Book TV:

Charles Mann, author of 1491, revisits the Americas a year after Christopher Columbus' arrival. The author reports on the European voyages that followed and the transportation of flora and fauna that reached portions of the globe it had never reached before, deemed the "Columbian Exchange." Mr. Mann recounts the economic and ecological impact of the Exchange. Charles Mann discusses his book with author Richard Rodriguez from the Los Angeles Public Library.

Charles C. Mann:

I felt alone and small, but in a way that was curiously like feeling exalted.