Everything is hard before it is easy. The day before something is a breakthrough， it’s a stupid idea.

There is no God higher than truth.

Reading is not a movement of the eyes; it’s a movement of the mind.

The greatest discovery is that human beings can alter their lives by altering the attitudes of their minds.

That “democracy” is a somewhat vague term which I cannot define precisely. We ought to say, therefore: “I am fairly certain that it is a good thing if a government has something of the characteristics that are common to the British and American Constitutions,” or something of this sort.

解释：兵器既不齐全又不锋利，实质上和没有兵器一样！

科学好奇心必须与商业纪律相匹配，才能为需要的人带来治疗方法。