Music directly represents the passion of the soul. If one listens to the wrong kind of music, he will become… — Aristotle

The totality is not, as it were, a mere heap, but the whole is something besides the parts.

The wise man must not be ordered but must order, and he must not obey another, but the less wise must obey him.

"It is impossible for the same attribute at once to belong and not to belong to the same thing and in the same relation"; and we must add any further qualifications that may be necessary to meet logical objections. This is the most certain of principles, since it possesses the required definition; for it is impossible for anyone to suppose that the same thing is and is not, as some imagine that Heraclitus says.