表演是一种活出自己疯狂的方式。
Acting is a way of living out one's insanity.
If you're not stubborn, you'll give up on experiments too soon. And if you're not flexible, you'll pound your head against the wall and you won't see a different solution to a problem you're trying to solve.
用黄金打造的船不能在波涛汹涌的江面上航行，用玉雕琢的马不能驰骋在千里路途上。
The only way to learn mathematics is to do mathematics.