Not To Know What Happened Before Means

We Should Never So Entirely Avoid Danger As To Appear Irresolute And Cowardly; But, At The Same Time, We Should Avoid Unnecessarily Exposing Ourselves To Danger, Than Which Nothing Can Be More Foolish.

In So Far As The Mind Is Stronger Than The Body, So Are The Ills Contracted By The Mind More Severe Than Those Contracted By The Body.

O Philosophy, Life's Guide! O Searcher-out Of Virtue And Expeller Of Vices! What Could We And Every Age Of Men Have Been Without Thee? Thou Hast Produced Cities; Thou Hast Called Men Scattered About Into The Social Enjoyment Of Life. [lat., O Vitae Philosophia Dux! O Virtutis Indagatrix, Expultrixque Vitiorum! Quid Non Modo Nos, Sed Omnino Vita Hominum Sine Et Esse Potuisset? Tu Urbes Peperisti; Tu Dissipatos Homines In Societatum Vitae Convocasti.]

What Society Does To Its Children, So Will Its Children Do To Society.

No Man Should So Act As To Make A Gain Out Of The Ignorance Of Another.