Ingratitude Is The Essence Of Vileness.

The Greatest Problem For The Human Species, The Solution Of Which Nature Compels Him To Seek, Is That Of Attaining A Civil Society Which Can Administer Justice Universally.

Every Man Is To Be Respected As An Absolute End In Himself; And It Is A Crime Against The Dignity That Belongs To Him As A Human Being, To Use Him As A Mere Means For Some External Purpose.

The More We Come In Contact With Animals And Observe Their Behaviour, The More We Love Them, For We See How Great Is Their Care Of The Young.

Psychologists Have Hitherto Failed To Realize That Imagination Is A Necessary Ingredient Of Perception Itself.

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