真正的艺术品包含着自己的美学理论，并提出了让人们藉以判断其优劣的标准。

Education is the most powerful weapon which you can use to change the world.

I believe in the power of love and music to change lives.

It is hard to read a newspaper or watch a television newscast without encountering someone who has come up with a new 'solution' to society's 'problems.'

The history of science is the history of men correcting their mistakes.

努力永远不会停止。