The Only Objects Of Practical Reason Are

The Science Of Mathematics Presents The Most Brilliant Example Of How Pure Reason May Successfully Enlarge Its Domain Without The Aid Of Experience

[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.

In The Natural State No Concept Of God Can Arise, And The False One Which One Makes For Himself Is Harmful. Hence The Theory Of Natural Religion Can Be True Only Where There Is No Science; Therefore It Cannot Bind All Men Together.

Animals... Are There Merely As A Means To An End. That End Is Man.

From Such Crooked Wood As That Which Man Is Made Of, Nothing Straight Can Be Fashioned.