Notion Without Intuition Is Empty,

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.

Even If A Civil Society Were To Be Dissolved By The Consent Of All Its Members (e.g., If A People Inhabiting An Island Decided To Separate And Disperse Throughout The World), The Last Murderer Remaining In Prison Would First Have To Be Executed, So That Each Has Done To Him What His Deeds Deserve And Blood Guilt Does Not Cling To The People For Not Having Insisted Upon This Punishment; For Otherwise The People Can Be Regarded As Collaborators In His Public Violation Of Justice.

Things Which We See Are Not By Themselves What We See ... It Remains Completely Unknown To Us What The Objects May Be By Themselves And Apart From The Receptivity Of Our Senses. We Know Nothing But Our Manner Of Perceiving Them.

Always Recognize That Human Individuals Are Ends, And Do Not Use Them As Means To Your End.

The Possession Of Power Inevitably Spoils The Free Use Of Reason.