Both classically- and romantically-minded spirits-inasmuch as these two species always exist-occupy themselves with a vision of the future: but the former do so out of a strength of their age, the latter out of its weakness.
Mathematics would certainly have not come into existence if one had known from the beginning that there was in nature no exactly straight line, no actual circle, no absolute magnitude.
What a dissimilarity we see in walking, swimming, and flying. And yet it is one and the same motion: it is just that the load- bearing capacity of the earth differs from that of the water, and that that of the water differs from that of the air! Thus we should also learn to fly as thinkers--and not imagine that we are thereby becoming idle dreamers!
Men have hitherto treated women like birds which have strayed down to them from the heights; as something more delicate, more fragile, more savage, stranger, sweeter, soulful--but as something which has to be caged up so that it shall not fly away.
A nation usually renews its youth on a political sick-bed, and there finds again the spirit which it had gradually lost in seeking and maintaining power.
The secret of realizing the greatest fruitfulness and the greatest enjoyment of existence is: to live dangerously! Build your cities on the slopes of Vesuvius! Send your ships out into uncharted seas! Live in conflict with your equals and with yourselves! Be robbers and ravagers as soon as you ca not be rulers and owners, you men of knowledge! The time will soon past when you could be content to live concealed int he woods like timid deer!
Words are acoustical signs for concepts; concepts, however, are more or less definite image signs for often recurring and associated sensations, for groups of sensations. To understand one another, it is not enough that one use the same words; one also has to use the same words for the same species of inner experiences; in the end one has to have one's experiences in common.
Has there ever been anything filthier on earth than the saints in the wilderness? Around them was not only the devil loose around them- but also the swine.
Yet for all that, there is nothing in me of a founder of a religion--religions are affairs of the rabble; I find it necessary to wash my hands after I have come into contact with religious people.