Human freedom is bounded by its choices.

The only way to avoid mistakes is to have no new ideas.

墨翟我上没有侍奉国君的差事，下没有耕田种地的艰难，我怎么敢放弃读书呢？ 

The novel is a form of exploration, a way of understanding the world and our place in it.

这个世界会打击每一个人，但经历过后，有些人会在受伤的地方变得更坚强。

Mathematics is the language with which God has written the universe.