All human errors are impatience, a premature breaking off of methodical procedure, an apparent fencing-in of what is apparently at issue.

The poor are not lazy; they are just caught in a system that makes it very hard for them to escape poverty.

明白事理的人使自己适应世界；不明事理的人想使世界适应自己。所以，所有进步都要靠不明事理的人。

On the path of science, failure and success are equally important; they are both steps towards truth.

有时你必须在内心经历某种死亡，才能从自己的灰烬中重生，相信自己，爱自己，成为一个新的人。