Man's Duty Is To Improve Himself; To

Experience Without Theory Is Blind, But Theory Without Experience Is Mere Intellectual Play.

Enlightenment Is Man's Emergence From His Self-imposed Immaturity...no Thing Is Required For This Enlightenment.. .except Freedom; And The Freedom In Question Is The Least Harmful Of All, Namely, The Freedom To Use Reason Publicly In All Matters.

Aus So Krummen Holze, Als Woraus Der Mensch Gemacht Ist, Kann Nichts Ganz Gerades Gezimmert Werden. Out Of The Crooked Timber Of Humanity, No Straight Thing Can Ever Be Made.

Nature Has Willed That Man Should, By Himself, Produce Everything That Goes Beyond The Mechanical Ordering Of His Animal Existence, And That He Should Partake Of No Other Happiness Or Perfection Than That Which He Himself, Independently Of Instinct, Has Created By His Own Reason.

Reason Can Never Prove The Existence Of God.