I'm not a messiah, but I'm not just a singer. I'm a message.

The essence of mathematics is not to make simple things complicated, but to make complicated things simple.

I have come to believe that a great teacher is a great artist and that there are as few as there are any other great artists. Teaching might even be the greatest of the arts since the medium is the human mind and spirit.

问题的解决是突然出现的，而不是通过逐步、一步一步的过程来接近的。