我知道我是聪明的，因为我自知无知。

梦想还是要有的，万一实现了呢？

我想成为一个能打动人们心灵的歌手。

I cannot but be astonished that Socrates， after having so often repeated to his fellow citizens that he did not pretend to any wisdom， but had been appointed by the gods to a mission of benevolence towards them， should have been condemned to death.

乐观是一种创造更美好未来的策略。因为除非你相信未来会更好，否则你不太可能站出来为创造这样的未来承担责任。