The only way to learn mathematics is to do mathematics.

I never really thought about being a director. I just wanted to be an actor. But as I got older, I realized that I wanted to have more control over the films I was in.

The only way to get rid of a temptation is to yield to it.

我绝不会再像以前一样，把命运加给我们的一点儿不幸拿来反复咀嚼(念念不忘)；我要享受现时，过去的事就让它过去吧。

每日不能克服恐惧者，尚未学会人生的第一课。

人类社会生活的行为流是由存在的物质条件构成的。