Success in grain cultivation isn't measured just in bushels, but in the health of our soil.

We are all susceptible to biases, even when we think we're being perfectly rational.

If you are not willing to learn, no one can help you. If you are determined to learn, no one can stop you.

That's exhilarating if you're doing well, and very crushing if you're not. It leads, in the worst cases -- in the analysis of a sociologist like Emil Durkheim -- it leads to increased rates of suicide. There are more suicides in developed, individualistic countries than in any other part of the world. And some of the reason for that is that people take what happens to them extremely personally -- they own their success, but they also own their failure.

A single seed can change the world.