We are all born with a certain inheritance of time, and we must learn to spend it wisely.

We are all alone, born alone, die alone, and—in spite of True Romance magazines—we shall all someday look back on our lives and see that, in spite of our company, we were alone the whole way.

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.

We don't inherit the ocean from our ancestors; we borrow it from our children.

In mathematics, the art of proposing a question must be held of higher value than solving it.

你无法改变过去，但可以通过担心未来来毁掉现在。

别让你的梦想只是梦想。

The basis of optimism is sheer terror.