教师必须具有健康的体魄，农人的身手，科学的头脑，艺术的兴味，改革社会的精神。

The test of a first-rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function.

I don't think you can make a good movie without loving the medium.

Ask not what your country can do for you --ask what you can do for your country.