Every challenge is an opportunity in disguise.

你的月亮无法发光是因为我。

"To lose one parent may be regarded as a misfortune; to lose both looks like carelessness."

What I want to talk to you about today is the difference between gifts and choices. Cleverness is a gift， kindness is a choice. Gifts are easy -- they're given after all. Choices can be hard. You can seduce yourself with your gifts if you're not careful， and if you do， it'll probably be to the detriment of your choices.

It is not the computer's fault that Maxwell's equations are not adequate to design the electric motor.