The slogan of Hell: Eat or be eaten. The slogan of Heaven: Eat and be eaten.

How happy the lot of the mathematician. He is judged solely by his peers, and the standard is so high that no colleague or rival can ever win a reputation he does not deserve.

Even the dreadful martyrdom must run its course Anyhow in a corner, some untidy spot Where the dogs go on with their doggy life

To be happy means to be free, not from pain or fear, but from care or anxiety.

If age, which is certainly Just as wicked as youth, look any wiser, It is only that youth is still able to believe It will get away with anything, while age Knows only too well that it has got away with nothing.

If we really want to live, we'd better start at once to try.

Narcissus does not fall in love with his reflection because it is beautiful, but because it is his. If it were his beauty that enthralled him, he would be set free in a few years by its fading.