所以富贵的人极其奢侈，二孤儿寡妇却受饥挨饿，虽然想天下不乱，也不可能。国君若真的希望天下太平而不希望天下大乱的话，如果要吃喝，就不能不节俭。 

坚持非常重要。你不应该放弃，除非你被迫放弃。

"The world is a book, and those who do not travel read only one page."

The boundary between physics and mathematics is not as clear-cut as one might think.

We don't read and write poetry because it's cute. We read and write poetry because we are members of the human race. And the human race is filled with passion. Medicine, law, business, engineering: these are noble pursuits and necessary to sustain life. But poetry, beauty, romance, love...these are what we stay alive for.