数学的本质在于它的自由。
The essence of mathematics lies in its freedom.
I'm not afraid to be alone; I'm afraid of being lonely.
The problem with marriage is that it ends every night after making love, and it must be rebuilt every morning before breakfast.
领导力在于今天做出艰难的决定，这些决定将塑造明天的机遇。
Behavior is not just a response to a stimulus, but is guided by expectations and purposes.
不要等待别人的许可去做出改变。