A Genius Is A Man Who Has

You Will Die But The Carbon Will Not; Its Career Does Not End With You. It Will Return To The Soil, And There A Plant May Take It Up Again In Time, Sending It Once More On A Cycle Of Plant And Animal Life.

That Series Of Inventions By Which Man From Age To Age Has Remade His Environment Is A Different Kind Of Evolution -- Not Biological, But Cultural Evolution . . . "the Ascent Of Man.

Sex Was Invented As A Biological Instrument By (say) The Green Algae. But As An Instrument In The Ascent Of Man Which Is Basic To His Cultural Evolution, It Was Invented By Man Himself.

One Original Thought Is Worth The Sum Total Of Human Knowledge, Because It Advances The Sum Total Of Human Knowledge By That One Original Thought.

One Aim Of Physical Sciences Had Been To Give An Exact Picture The Material World. One Achievement Of Physics In The Twentieth Century Has Been To Prove That That Aim Is Unattainable.