In The Mere Concept Of One Thing

All Human Knowledge Begins With Intuitions, Proceeds From Thence To Concepts, And Ends With Ideas.

It Is Presumed That There Exists A Great Unity In Nature, In Respect Of The Adequacy Of A Single Cause To Account For Many Different Kinds Of Consequences.

We Assume A Common Sense As The Necessary Condition Of The Universal Communicability Of Our Knowledge, Which Is Presupposed In Every Logic And Every Principle Of Knowledge That Is Not One Of Skepticism.

The Evil Effect Of Science Upon Men Is Principally This, That By Far The Greatest Number Of Those Who Wish To Display A Knowledge Of It Accomplish No Improvement At All Of The Understanding, But Only A Perversity Of It, Not To Mention That It Serves Most Of Them As A Tool Of Vanity.

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.