Happiness Is Not An Ideal Of Reason,

The Inscrutable Wisdom Through Which We Exist Is Not Less Worthy Of Veneration In Respect To What It Denies Us Than In Respect To What It Has Granted.

Duty Is The Necessity To Act Out Of Reverence For The Law.

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

Our Knowledge Springs From Two Fundamental Sources Of The Mind; The First Is The Capacity Of Receiving Representations (receptivity For Impressions), The Second Is The Power Of Knowing An Object Through These Representations (spontaneity [in The Production] Of Concepts).

Enlightenment Is Man's Leaving His Self-caused Immaturity. Immaturity Is The Incapacity To Use One's Intelligence Without The Guidance Of Another. Such Immaturity Is Self-caused If It Is Not Caused By Lack Of Intelligence, But By Lack Of Determination And Courage To Use One's Intelligence Without Being Guided By Another. Sapere Aude! Have The Courage To Use Your Own Intelligence! Is Therefore The Motto Of The Enlightenment.