First Be Sure A Thing

I Have Not Failed 700 Times. I Have Not Failed Once. I Have Succeeded In Proving That Those 700 Ways Will Not Work. When I Have Eliminated The Ways That Will Not Work, I Will Find The Way That Will Work.

I Am Both Pleased But Astonished By The Fact That Mankind Has Not Yet Begun To Use All The Means And Devices That Are Available For Destruction. I Hope That Such Weapons Are Never Manufactured In Quantity.

My Main Purpose In Life Is To Make Money So I Can Afford To Go On Creating More Inventions.

I Did Not Fail Two Thousand Times. I Merely Found Two Thousand Ways Not To Make A Lightbulb.

I Never Quit Until I Get What I Want.