All Is To Be Doubted.

But In My Opinion, All Things In Nature Occur Mathematically.

Sensations Are Nothing But Confused Modes Of Thinking.

Be That As It May, There Is Fixed In My Mind A Certain Opinion Of Long Standing, Namely That There Exists A God Who Is Able To Do Anything And By Whom I, Such As I Am, Have Been Created. How Do I Know That He Did Not Bring It About That There Is No Earth At All, No Heavens, No Extended Thing, No Shape, No Size, No Place, And Yet Bringing It About That All These Things Appear To Me To Exist Precisely As They Do Now?

The Only Thing That I Know, Is That I Know Nothing

Now Therefore, That My Mind Is Free From All Cares, And That I Have Obtained For Myself Assured Leisure In Peaceful Solitude, I Shall Apply Myself Seriously And Freely To The General Destruction Of All My Former Opinions.