“There are some things in this universe best left alone.”

“That's some catch, that Catch-22," he observed.It's the best there is," Doc Daneeka agreed.”

“The computer programmer is a creator of universes for which he alone is the lawgiver. No playwright, no stage director, no emperor, however powerful, has ever exercised such absolute authority to arrange a stage or field of battle and to command such unswervingly dutiful actors or troops.”

“If the day should ever come when we must go, if some day we are compelled to leave the scene of history, we will slam the door so hard that the universe will shake and mankind will stand back in stupefaction..”

“There cannot be a language more universal and more simple, more free from errors and obscurities...more worthy to express the invariable relations of all natural things [than mathematics]. [It interprets] all phenomena by the same language, as if to attest the unity and simplicity of the plan of the universe, and to make still more evident that unchangeable order which presides over all natural causes”

“The best teachers have shown me that things have to be done bit by bit. Nothing that means anything happens quickly - we only think it does.”

“Some things you know without ever being told. Other things you learn slowly. You learn them despite what you want to believe.”