True art and true science possess two unmistakable marks: the first, an inward mark, which is this, that the servitor of art and science will fulfil his vocation, not for profit but with self- sacrifice; and the second, an external sign, his productions will be intelligible to all the people whose welfare he has in view.

The example of a syllogism that he had studied in Kiesewetter's logic: Caius is a man, men are mortal, therefore Caius is mortal, had throughout his whole life seemed to him right only in relation to Caius, but not to him at all.

Rummaging in our souls, we often dig up something that ought to have lain there unnoticed.

When politics and home life have become one and the same thing, [...] then,[...] it is evident that we will be in a state of total liberty or anarchy.

In education, once more, the chief things are equality and freedom.

Life is everything. Life is God. Everything shifts and moves, and this movement is God. And while there is life, there is delight in the self-awareness of the divinity. To love life is to love God. The hardest and most blissful thing is to love this life in one's suffering, in the guiltlessness of suffering.

The best generals I have known were... stupid or absent-minded men. Not only does a good army commander not need any special qualities, on the contrary he needs the absence of the highest and best human attributes - love, poetry, tenderness, and philosophic inquiring doubt. He should be limited, firmly convinced that what he is doing is very important (otherwise he will not have sufficient patience), and only then will he be a brave leader. God forbid that he should be humane, should love, or pity, or think of what is just and unjust.