It's Not What You Have Lost, But

At The Age Of Eleven, I Began Euclid, With My Brother As My Tutor. This Was One Of The Great Events Of My Life, As Dazzling As First Love. I Had Not Imagined There Was Anything So Delicious In The World. From That Moment Until I Was Thirty-eight, Mathematics Was My Chief Interest And My Chief Source Of Happiness.

The Great Majority Of Men And Women, In Ordinary Times, Pass Through Life Without Ever Contemplating Or Criticising, As A Whole, Either Their Own Conditions Or Those Of The World At Large.

Civilized Life Has Altogether Grown Too Tame, And, If It Is To Be Stable, It Must Provide A Harmless Outlets For The Impulses Which Our Remote Ancestors Satisfied In Hunting.

It Seems To Me A Fundamental Dishonesty, And A Fundamental Treachery To Intellectual Integrity To Hold A Belief Because You Think It's Useful And Not Because You Think It's True.

Work Is Of Two Kinds: First, Altering The Position Of Matter At Or Near The Earth's Surface Relative To Other Matter; Second, Telling Other People To Do So.