一流的智力的考验是同时持有两种相反的观点，并且仍然保持运作的能力。
"In the silence between words, the truth often lies hidden."
The writer cannot be a mere storyteller; he cannot be a mere teacher; he cannot be a mere entertainer. He must be all of these and more.
The challenge in theoretical computer science is not just to solve problems, but to understand the nature of problem-solving itself.
