Happiness Is The Reward Of Virtue.

Moral Qualities Are So Constituted As To Be Destroyed By Excess And By Deficiency . . .

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.

It Is The Repeated Performance Of Just And Temperate Actions That Produces Virtue.

Young People Are In A Condition Like Permanent Intoxication, Because Life Is Sweet And They Are Growing.

[the Virtues] Cannot Exist Without Prudence. A Proof Of This Is That Everyone, Even At The Present Day, In Defining Virtue, After Saying What Disposition It Is [i.e. Moral Virtue] And Specifying The Things With Which It Is Concerned, Adds That It Is A Disposition Determined By The Right Principle; And The Right Principle Is The Principle Determined By Prudence.