There Is Nothing Higher Than Reason.

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

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.

Most Men Use Their Knowledge Only Under Guidance From Others Because They Lack The Courage To Think Independently Using Their Own Reasoning Abilities. It Takes Intellectual Daring To Discover The Truth.

I Have No Knowledge Of Myself As I Am, But Merely As I Appear To Myself.

Parents Usually Educate Their Children Merely In Such A Manner Than However Bad The World May Be, They May Adapt Themselves To Its Present Conditions. But They Ought To Give Them An Education So Much Better Than This, That A Better Condition Of Things May Thereby Be Brought About By The Future.