Now property is part of a household, and the acquisition of property part of household-management; for neither life itself nor the good life is possible without a certain minimum supply of the necessities.

A true friend is one soul in two bodies.

Doubt is the beginning of wisdom

The greatest crimes are caused by surfeit, not by want.

Happiness is an expression of the soul in considered actions.

So, if we must give a general formula applicable to all kinds of soul, we must describe it as the first actuality [entelechy] of anatural organized body.

Money was established for exchange, but interest causes it to be reproduced by itself. Therefore this way of earning money is greatly in conflict with the natural law.