The unity of mathematics is not an illusion but a reality waiting to be uncovered.

The best way to be happy is to love yourself.

真相很少是纯粹的，也从不简单。

A writer's life is a highly vulnerable, almost naked activity. We don't have to weep about that. The writer makes his choice and is stuck with it. But it is true to say that you are open to all the winds, some of them icy indeed. You are out on your own, out on a limb. You find no shelter, no protection — unless you lie — in which case of course you have constructed your own protection and, it could be argued, become a politician.

"To love is to risk not being loved in return. To hope is to risk pain. To try is to risk failure, but risk must be taken because the greatest hazard in life is to risk nothing."

In science, as in life, the important things are rarely simple or obvious.