Measure what is measurable, and make measurable what is not so.

A man who moralizes is usually a hypocrite, and a woman who moralizes is invariably plain.

树木是大地向倾听的天空诉说的无尽努力。

"The very least you can do in your life is to figure out what you hope for. And the most you can do is live inside that hope. Not admire it from a distance but live right in it, under its roof."

真正的历史学家是真理的战士。