Whenever I climb I am followed by a dog called 'Ego'.

You lack the courage to be consumed in flames and to become ashes: so you will never become new, and never young again!

Once the decision has been made, close your ear even to the best counter argument: sign of a strong character. Thus an occasional will to stupidity.

We are unknown to ourselves, we men of knowledge - and with good reason. We have never sought ourselves - how could it happen that we should ever find ourselves? It has rightly been said: "Where your treasure is, there will your heart be also"; our treasure is where the beehives of our knowledge are.

He who is not a bird should not build his nest over abysses.

In praise there is more obtrusiveness than in blame.

Asceticism is the right way of thinking for those who have to extirpate their sensual drives because they are ravening beasts of prey. But only for those!