The best books are the ones that children want to read again and again.

The course of human life is not determined by drives or environment alone, but by creative self-direction as well.

政治被认为是第二古老的职业。我逐渐意识到它与第一职业（指卖淫）极为相似。

爱别人的，别人也必然爱他，利于别人的，别人也必然利于他，憎恶别人的，别人也必然憎恶他，残害别人的，别人也必然残害他。

科学与传统的结合可以释放前所未有的产量。