One must have all the virtues to sleep well. Shall I bear false witness? Shall I commit adultery? Shall I covet my neighbor's maid? All that would go ill with good sleep.

What can everyone do? Praise and blame. This is human virtue, this is human madness.

It is absolutely impossible for a subject to see or have insight into something while leaving itself out of the picture, so impossible that knowing and being are the most opposite of all spheres.

No more fiction, for now we calculate; but that we may calculate, we had to make fiction first.

If married couples did not live together, happy marriages would be more frequent.

Something unappeased, unappeasable, is within me.

Scholarship has the same relationship to wisdom as righteousness has to holiness: it is cold and dry, it is loveless and knows nodeep feelings of inadequacy or longing.