进步更有效的原因似乎在于青年时期大脑可塑性强的良好教育，以及成年后达到的高标准卓越。

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.

Great deeds are usually wrought at great risks.

应对不自由世界的唯一方法是变得绝对自由，以至于你的存在本身就是一种反抗。

我对与任何人竞争不感兴趣。我希望我们都能成功。