Act In Such A Way That You

One Who Makes Himself A Worm Cannot Complain Afterwards If People Step On Him.

Give Me Matter, And I Will Construct A World Out Of It!

A Categorical Imperative Would Be One Which Represented An Action As Objectively Necessary In Itself, Without Reference To Any Other Purpose.

[s]uppose The Mind Of [a] Friend Of Humanity Were Clouded Over With His Own Grief, Extinguishing All Sympathetic Participation In The Fate Of Others; He Still Has The Resources To Be Beneficent To Those Suffering Distress, But The Distress Of Others Does Not Touch Him Because He Is Sufficiently Busy With His Own; And Now, Where No Inclination Any Longer Stimulates Him To It, He Tears Himself Out Of His Deadly Insensibility And Does The Action Without Any Inclination, Solely From Duty.

Reason Must Approach Nature In Order To Be Taught By It. It Must Not, However, Do So In The Character Of A Pupil Who Listens To Everything That The Teacher Chooses To Say, But Of An Appointed Judge Who Compels The Witness To Answer Questions Which He Has Himself Formulated.