The concept of law involves the union of primary rules of obligation with secondary rules of recognition, change, and adjudication.

I hope that in this year to come, you make mistakes. Because if you are making mistakes, then you are making new things, trying new things, learning, living, pushing yourself, changing yourself, changing your world. You're doing things you've never done before, and more importantly, you're doing something.

Strength does not come from physical capacity. It comes from an indomitable will.

有道德的人能够反思自己过去的行为及其动机。