What is all our knowledge worth? We do not even know what the weather will be tomorrow.

It is only when one is thoroughly true that there can be purity and freedom. Falsehood always punishes itself.

Some men, like modern shops, hang everything in their show windows; when one goes inside, nothing is to be found.

Weak men are easily put out of humor. Oil freezes quicker than water.

All men are selfish, but the vain man is in love with himself. He admires, like the lover his adored one, everything which to others is indifferent.

When you have discovered a stain in yourself, you eagerly seek for and gladly find stains in others.

I have been young and am now old, and have not yet known an untruthful man to come to a good end.