When our brain feels too weak to deal with our opponent's objections, our heart answers by casting suspicion on their underlying motives.

He who would learn to fly one day must first learn to stand and walk and run and climb and dance; one cannot fly into flying.

Everyone nowadays lives through too much and thinks through too little: they have a ravenous appetite and colic at the same time so that they keep getting thinner and thinner no matter how much they eat.--Whoever says nowadays, "I have not experienced anything"--is a simpleton.

Envy and jealousy are the private parts of the human soul. Perhaps the comparison can be extended.

All of life is a dispute over taste and tasting.

Subordination to morality can be slavish or vain or self- interested or resigned or gloomily enthusiastic or thoughtless or an act of despair, just as subordination to a prince can be: in itself it is nothing moral.

That which needs to be proved cannot be worth much.