Prudence Reproaches; Conscience Accuses.

Everything In Nature Acts In Conformity With Law.

Act Only According To That Maxim Whereby You Can At The Same Time Will That It Should Become A Universal Law.

Two Things Fill The Mind With Ever-increasing Wonder And Awe, The More Often And The More Intensely The Mind Of Thought Is Drawn To Them: The Starry Heavens Above Me And The Moral Law Within Me... Morality Is Not Properly The Doctrine Of How We May Make Ourselves Happy, But How We May Make Ourselves Worthy Of Happiness.

This Can Never Become Popular, And, Indeed, Has No Occasion To Be So; For Fine-spun Arguments In Favour Of Useful Truths Make Just As Little Impression On The Public Mind As The Equally Subtle Objections Brought Against These Truths. On The Other Hand, Since Both Inevitably Force Themselves On Every Man Who Rises To The Height Of Speculation, It Becomes The Manifest Duty Of The Schools To Enter Upon A Thorough Investigation Of The Rights Of Speculative Reason, And Thus To Prevent The Scandal Which Metaphysical Controversies Are Sure, Sooner Or Later, To Cause Even To The Masses.

Act In Such A Way That You Will Be Worthy Of Being Happy.