Adapt or perish, now as ever, is nature's inexorable imperative.

If you fell down yesterday, stand up today.

Every time I see an adult on a bicycle, I no longer despair for the future of the human race.

Nothing leads so straight to futility as literary ambitions without systematic knowledge.

Beauty is in the heart of the beholder.

We are living in 1937, and our universities, I suggest, are not half-way out of the fifteenth century. We have made hardly any changes in our conception of university organization, education, graduation, for a century - for several centuries.

Human history becomes more and more a race between education and catastrophe.

Human history in essence is the history of ideas.

Advertising is legalized lying.

History is a race between education and catastrophe.

The doctrine of the Kingdom of Heaven, which was the main teaching of Jesus, is certainly one of the most revolutionary doctrines that ever stirred and changed human thought.

If we don't end war, war will end us.

In politics, strangely enough, the best way to play your cards is to lay them face upwards on the table.

Moral indignation is jealousy with a halo.

There's nothing wrong in suffering, if you suffer for a purpose. Our revolution didn't abolish danger or death. It simply made danger and death worthwhile.

Moral indignation is jealousy with a halo.

Affliction comes to us, not to make us sad but sober; not to make us sorry but wise.

I want to go ahead of Father Time with a scythe of my own.

The only true measure of success is the ratio between what we might have done and what we might have been on the one hand, and the thing we have made and the things we have made of ourselves on the other.