No leader can be too far ahead of his followers.

Curiously enough, it is often the people who refuse to assume any responsibility who are apt to be the sharpest critics of those who do.

What we must learn to do is to create unbreakable bonds between the sciences and the humanities. We cannot procrastinate. The world of the future is in our making. Tomorrow is now.

it is always easier to do nothing than to try a new line of action.

If everything was in your favor, if you did not have to surmount any great mountains, then you have nothing to be proud of. But if you feel that you have special difficulties, then you must indeed be proud of your achievement.

... the next war will be a war in which people not armies will suffer, and our boasted, hard-earned civilization will do us no good. Cannot the women rise to this great opportunity and work now, and not have the double horror, if another war comes, of losing their loved ones, and knowing that they lifted no finger when they might have worked hard?

It takes courage to love, but pain through love is the purifying fire which those who love generously know. We all know people who are so much afraid of pain that they shut themselves up like clams in a shell and, giving out nothing, receive nothing and therefore shrink until life is a mere living death.