学习是通过修改符号结构来提高性能的过程。

Virtually no idea is too ridiculous to be accepted, even by very intelligent and highly educated people, if it provides a way for them to feel special and important. Some confuse that feeling with idealism.

We must listen to indigenous knowledge—they've been practicing sustainable forestry for centuries.

Happiness is not a matter of intensity but of balance, order, rhythm and harmony.