The so-called Pythagoreans, who were the first to take up mathematics, not only advanced this subject, but saturated with it, they fancied that the principles of mathematics were the principles of all things

There are things which seem incredible to most men who have not studied mathematics

Politicians also have no leisure, because they are always aiming at something beyond political life itself, power and glory, or happiness

Poetry is something more philosophic and of graver import than history, since its statements are of nature of universals, whereas those of history are of singulars

Poetry is finer and more philosophical than history; for poetry expresses the universal, and history only the particular

Love is composed of a single soul inhabiting two bodies

The appropriate age for marriage is around eighteen for girls and thirty-seven for men

Praise invariably implies a reference to a higher standard

The quality of life is determined by its activities

A good character carries with it the highest power of causing a thing to be believed