Free education is abundant, all over the Internet. It's the desire to learn that's scarce.

If you let people into your life a little bit, they can be pretty damn amazing.

The truth is often hidden in the simplest things.

The test of a psychological idea is its life-enhancing power.

我通常会说心里话，但这年头说出真心话是个错误，容易引起他人误会。