With Me, Everything Turns Into Mathematics.

Archimedes, That He Might Transport The Entire Globe ... Demanded Only A Point That Was Firm And Immovable; So Also, I Shall Be Entitled To Entertain The Highest Expectations, If I Am Fortunate Enough To Discover Only One Thing That Is Certain And Indubitable.

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

In Order To Improve The Mind, We Ought Less To Learn, Than To Contemplate.

On The One Hand I Have A Clear And Distinct Idea Of Myself, In So Far As I Am A Thinking, Non-extended Thing; And On The Other Hand I Have A Distinct Idea Of Body, In So Far A This Is Simply An Extended, Non-thinking Thing. And, Accordingly, It Is Certain That I Am Really Distinct From My Body, And Exist Without It.

A State Is Better Governed Which Has Few Laws, And Those Laws Strictly Observed.