Knowledge is of no value unless you put it into practice.

It is easy to be a philosopher in academia, but it is very difficult to be a philosopher in life.

I can only regard with bewilderment an educated man who is also religious

Reason and justice tell me there's more love for humanity in electricity and steam than in chastity and vegetarianism.

In nature a repulsive caterpillar turns into a lovely butterfly. But with human beings it is the other way round: a lovely butterfly turns into a repulsive caterpillar.

I do not know why one should not hunt two hares even in the literal sense....

Not everyone knows how to be silent or to leave in good time. It happens that even people of good breeding fail to notice that their presence provokes in the weary or preoccupied host a feeling akin to hatred, and that this feeling is tensely concealed and covered up with lies.