Reason obeys itself; and ignorance submits to whatever is dictated to it.

Real energy solutions come from real energy sources.

The world is indeed full of peril, and in it there are many dark places; but still there is much that is fair, and though in all lands love is now mingled with grief, it grows perhaps the greater.

我不是榜样，我是那些不相信榜样的人的榜样。

分析和代数之间的相互作用是数论中许多突破的驱动力。