"To be hopeful in bad times is not just foolishly romantic. It is based on the fact that human history is a history not only of cruelty, but also of compassion, sacrifice, courage, kindness."

成功是团队的努力——没有人能独自取得伟大成就。

在计算复杂性的研究中，我们常常发现可能的边界是由我们想象力的极限定义的。