Psychology as the behaviorist views it is a purely objective experimental branch of natural science.

我寻找钥匙多年，但门一直是开着的。

The past is never dead. It's not even past.

"When I approach a child, he inspires in me two sentiments; tenderness for what he is, and respect for what he may become."

"A good book should leave you slightly exhausted at the end. You live several lives while reading it."

本当の強さは、弱さを認めることにある。

软件工程的目标是控制复杂性，而不是制造复杂性。