The best preparation for tomorrow is doing your best today.

世界的意义在于愿望与事实的分离。

It must be remembered that while sympathy with joy intensifies the sum of joy in the world., sympathy with pain does not really diminish the amount of pain. It may make man better able to endure evil, but the evil remains.

Mathematical intuition often guides the development of algorithms, but it is the rigorous proof that ensures their correctness and efficiency.

记忆是我们以为已经忘记的东西；它是我们已经忘记自己忘记了的东西。

My characters are not innocent. They know too much.