A Scientist Is Never Certain. ... We

If You Can Find Any Other View Of The World Which Agrees Over The Entire Range Where Things Have Already Been Observed, But Disagrees Somewhere Else, You Have Made A Great Discovery.

The Present Situation In Physics Is As If We Know Chess, But We Don't Know One Or Two Rules.

It Is Going To Be Necessary That Everything That Happens In A Finite Volume Of Space And Time Would Have To Be Analyzable With A Finite Number Of Logical Operations. The Present Theory Of Physics Is Not That Way, Apparently. It Allows Space To Go Down Into Infinitesimal Distances, Wavelengths To Get Infinitely Great, Terms To Be Summed In Infinite Order, And So Forth; And Therefore, If This Proposition [that Physics Is Computer-simulatable] Is Right, Physical Law Is Wrong.

The Test Of All Knowledge Is Experiment.

I Think It's Much More Interesting To Live Not Knowing Than To Have Answers Which Might Be Wrong.