一个好的数学问题的定义是它产生的数学，而不是问题本身。

"We are all in the gutter, but some of us are looking at the stars."

我们德国人永远不会摆脱希特勒。他就像我们脸上的胎记。

未来是一面反映过去的镜子，但图像总是扭曲的。

纯洁的手不需要手套来遮盖。

I don't make music for the moment. I make music for the future.

The principle goal of education in the schools should be creating men and women who are capable of doing new things, not simply repeating what other generations have done.

人类思维存在着滞后性。我们常常根据过去的经验来应对未来，却忽视了未来可能与过去完全不同。