It is not conflict of opinions that has made history so violent but conflict of belief in opinions, that is to say conflict of convictions.

Rejoicing in our joy, not suffering over our suffering, makes someone a friend.

It is not the strengths, but the durations of great sentiments that make great men.

The only excuse for God is that he doesn't exist.

I love all who are like heavy drops falling one by one out of the dark cloud that lowereth over man: they herald the coming of the lightning, and succumb as heralds.

The thirst for equality can express itself either as a desire to draw everyone down to one's level, or to raise oneself and everyone else up.

What a dissimilarity we see in walking, swimming, and flying. And yet it is one and the same motion: it is just that the load- bearing capacity of the earth differs from that of the water, and that that of the water differs from that of the air! Thus we should also learn to fly as thinkers--and not imagine that we are thereby becoming idle dreamers!