可持续发展不是一种选择；它是我们对后代的责任。

Science is the poetry of reality.

If a Nation expects to be ignorant and free in a state of civilization,it expects what never was and never will be....If we are to guard against ignorance and remain free,it is the responsibility of every American to be informed."

比生存欲望更强烈的，只有爱的欲望。

我不怕黑暗，我怕黑暗中的东西。

你无法前瞻性地连接这些点；你只能回顾性地连接它们。

伟大的哲学家是真理的伟大爱好者。

生命太短暂，不要把时间浪费在无关紧要的事情上。