I Know That I Exist; The Question

The Two Operations Of Our Understanding, Intuition And Deduction, On Which Alone We Have Said We Must Rely In The Acquisition Of Knowledge.

I Hope That Posterity Will Judge Me Kindly, Not Only As To The Things Which I Have Explained, But Also To Those Which I Have Intentionally Omitted So As To Leave To Others The Pleasure Of Discovery.

Give Me Extension And Motion And I Will Construct The Universe.

The Chief Cause Of Human Errors Is To Be Found In The Prejudices Picked Up In Childhood.

Each Problem That I Solved Became A Rule, Which Served Afterwards To Solve Other Problems.