"A writer is a mirror reflecting the world, but also a lamp illuminating the dark corners of the human soul."
Make it a rule never to give a child a book you would not read yourself.
The joy of mathematics lies in the journey of discovery, not just the destination.
只有当我们忘记死者时,他们才对我们死去。
计算复杂性的美在于它能够根据问题的固有难度对问题进行分类。