The more cunning a man is, the less he suspects that he will be caught in a simple thing. The more cunning a man is, the simpler the trap he must be caught in. Crime And Punishment

Idleness is the beginning of all psychology. What? Could it be that psychology is -- a vice? Twilight of the Idols

But when returning into herself she [the soul] reflects; then she passes into the realm of purity, and eternity, and immortality, and unchangeableness, which are her kindred, and with them she ever lives, when she is by herself and is not let or hindered; then she ceases from her erring ways, and being in communion with the unchanging is unchanging. And this state of the soul is called wisdom. The Trials Of Socrates

Politeness is to human nature what warmth is to wax. Counsels and Maxims