Progress is impossible without change, and those who cannot change their minds cannot change anything.

Wisdom comes to us when it can no longer do any good.

The psychologist must be a meticulous observer.

冒险本身就是值得的。

"History is not just about kings and queens; it's about ordinary people and their extraordinary lives."

The eleventh commandment was "Thou Shalt Compute" or "Thou Shalt Not Compute" - I forget which.