When you ask a dumb question, you get a smart answer.

These two rational faculties may be designated the Scientific Faculty and the Calculative Faculty respectively; since calculation is the same as deliberation, and deliberation is never exercised about things that are invariable, so that the Calculative Faculty is a separate part of the rational half of the soul.

We are better able to study our neighbours than ourselves, and their actions than our own.

Selfishness doesn't consist in a love to yourself, but in a big degree of such love.

Money was intended to be used in exchange, but not to increase at interest. And this term interest, which means the birth of money from money, is applied to the breeding of money because the offspring resembles the parent. Wherefore of all modes of getting wealth this is the most unnatural.

The fool tells me his reason; the wise man persuades me with my own.

In justice is all virtues found in sum.