If your dreams don't scare you, they are too small.

A religion that gives nothing, costs nothing, and suffers nothing, is worth nothing.

找不到时间娱乐的人迟早会被迫找时间生病。

Mathematics is a creative endeavor, just like art or music.

你必须相信你的长期计划，但你需要短期目标来激励和启发你。