Do not paint a picture either of God or the devil on your walls: this will ruin both your walls and the atmosphere.

I change too quickly: my today refutes my yesterday. When I ascend I often jump over steps, and no step forgives me that.

Love and hatred are not blind, but are blinded by the fire they bear within themselves.

Whether a man hides his bad qualities and vices or confesses them openly, his vanity wants to gain an advantage by it in both cases: just note how subtly he distinguishes between those he will hide his bad qualities from and those he will face honestly and candidly.

Time, space, and causality are only metaphors of knowledge, with which we explain things to ourselves.

It is our taste that decides against Christianity now, no longer our reasons.

The strongest and most evil spirits have to date advanced mankind the most: they always rekindled the sleeping passions - all orderly arranged society lulls the passions to sleep; they always reawakened the sense of comparison, of contradiction, of delight in the new, the adventurous, the untried; they compelled men to set opinion against opinion, ideal plan against ideal plan.