催化不仅仅是让反应更快，而是让反应更好。

快乐有益于身体，但悲伤才能发展心灵的力量。

Never use a credit card for credit. The only kind of credit， or debt， that is acceptable is debt to acquire something whose exchange value is extremely likely to increase， like in a home. The exchange value of most things diminishes or vanishes the moment you purchase them. Don’t be in debt to losers.

Fiction allows us to tell truths that are too slippery for nonfiction.