The worst thing that can happen to a human being is to lose hope.

数学的本质在于它的自由。

恐惧是自由的敌人。

"The only way to deal with the world is to laugh at it."

I don't think you can make a good movie without a good script.

Don't be afraid of being different, be afraid of being the same as everyone else.

“用进废退”无论在哪里都适用的道理

可持续性不是一个选择；它是我们对后代的责任。

在数学中，提出问题的艺术必须比解决问题更有价值。