Stupidity is brief and guileless, while wit equivocates and hides. Wit is a scoundrel, while stupidity is honest and sincere.

The more stupid one is, the closer one is to reality. The more stupid one is, the clearer one is. Stupidity is brief and artless, while intelligence squirms and hides itself. Intelligence is unprincipled, but stupidity is honest and straightforward.

Wer sich selbst belügt und seine eigenen Lügen anhört, kommt schließlich soweit, dass er keine Wahrheit mehr, weder in sich noch außer sich, zu erkennen vermag [...]

Nothing in this world is harder than speaking the truth, nothing easier than flattery.

Gentlemen, let us suppose that man is not stupid. (Indeed one cannot refuse to suppose that, if only from the one consideration, that, if man is stupid, then who is wise?) But if he is not stupid, he is monstrously ungrateful! Phenomenally ungrateful. In fact, I believe that the best definition of man is the ungrateful biped.

All the other children at my school are stupid. Except I'm not meant to call them stupid, even though this is what they are.