成为国际主义者就是偿还我们对人类的债务。

We have really everything in common with America nowadays, except, of course, language.

"Psychology must bridge the gap between thought and action."

年轻人是可怕的，因为怎么能知道他的将来不如我们现在呢？但如果一个人到了四十、五十岁还默默无闻，他也就没有什么可怕的了。