God Creates The Animals, Man Creates Himself.

The Greatest Events Occur Without Intention Playing Any Part In Them; Chance Makes Good Mistakes And Undoes The Most Carefully Planned Undertaking. The World's Greatest Events Are Not Produced, They Happen.

Those Who Have Racked Their Brains To Discover New Proofs Have Perhaps Been Induced To Do So By A Compulsion They Could Not Quite Explain To Themselves. Instead Of Giving Us Their New Proofs They Should Have Explained To Us The Motivation That Constrained Them To Search For Them.

Cultivate That Kind Of Knowledge Which Enables Us To Discover For Ourselves In Case Of Need That Which Others Have To Read Or Be Told Of.

It Is Strange That Only Extraordinary Men Make The Discoveries, Which Later Appear So Easy And Simple.

There Is Something In The Character Of Every Man Which Cannot Be Broken In--the Skeleton Of His Character; And To Try To Alter This Is Like Training A Sheep For Draught Purposes.