Humanity Is At Its Greatest Perfection In

Maturity Is Having The Courage To Use One's Own Intelligence!

Morality Is Not Properly The Doctrine Of How We May Make Ourselves Happy, But How We May Make Ourselves Worthy Of Happiness.

The History Of The Human Race, Viewed As A Whole, May Be Regarded As The Realization Of A Hidden Plan Of Nature To Bring About A Political Constitution, Internally, And For This Purpose, Also Externally Perfect, As The Only State In Which All The Capacities Implanted By Her In Mankind Can Be Fully Developed.

Happiness Is Not An Ideal Of Reason, But Of Imagination.

Cruelty To Animals Is Contrary To Man's Duty To Himself, Because It Deadens In Him The Feeling Of Sympathy For Their Sufferings, And Thus A Natural Tendency That Is Very Useful To Morality In Relation To Other Human Beings Is Weakened.