Reason Can Never Prove The Existence Of

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

An Action, To Have Moral Worth, Must Be Done From Duty.

The Light Dove, Cleaving The Air In Her Free Flight, And Feeling Its Resistance, Might Imagine That Its Flight Would Be Still Easier In Empty Space.

Thoughts Without Content Are Empty, Intuitions Without Concepts Are Blind... The Understanding Can Intuit Nothing, The Senses Can Think Nothing. Only Through Their Union Can Knowledge Arise.

All The Interests Of My Reason, Speculative As Well As Practical, Combine In The Three Following Questions: 1. What Can I Know? 2. What Ought I To Do? 3. What May I Hope?