过去并未死去。它甚至从未过去。
The past is not dead. It is not even past.
The advancement of mathematics is due to those who are driven not by the desire for application but by the joy of discovery.
科学不是形式逻辑——它需要思想的自由发挥,与其他任何创造性艺术一样。
向一个人展示他在错误中是一回事,让他掌握真理是另一回事。
当没有人相信你时,你必须相信自己。