二十世纪的伟大斗争是自由主义与极权主义之间的斗争。
The great struggle of the twentieth century was between liberalism and totalitarianism.
自知之明的人，不埋怨人；了解命运的人，不埋怨天；埋怨别人的人，遭遇穷困；埋怨上天的人，没有志向。
我不需要理由去坚强。
I like crossing the imaginary boundaries people like to draw between scientific fields.
"The only thing to do with good advice is to pass it on. It is never of any use to oneself."