The Best Theory Is Inspired By Practice.

People Think That Computer Science Is The Art Of Geniuses But The Actual Reality Is The Opposite, Just Many People Doing Things That Build On Each Other, Like A Wall Of Mini Stones.

I've Never Been A Good Estimator Of How Long Things Are Going To Take.

... The Designer Of A New System Must Not Only Be The Implementor And The First Large-scale User; The Designer Should Also Write The First User Manual. ... If I Had Not Participated Fully In All These Activities, Literally Hundreds Of Improvements Would Never Have Been Made, Because I Would Never Have Thought Of Them Or Perceived Why They Were Important.

We Should Forget About Small Efficiencies, Say About 97% Of The Time: Premature Optimization Is The Root Of All Evil. Yet We Should Not Pass Up Our Opportunities In That Critical 3%

Science Is What We Understand Well Enough To Explain To A Computer. Art Is Everything Else We Do.