Object-oriented programming as it emerged in Simula 67 allows software structure to be based on real-world structures, and gives programmers a powerful way to simplify the design and construction of complex programs.

The first step is always to succeed in becoming surprised - to notice that there is something funny going on.

The best computer scientists are...technologists who crave beauty.

We can't share the earth with pure evil anymore than we can share the earth with smallpox.

Beauty is more important in computing than anywhere else in technology because software is so complicated. Beauty is the ultimate defense against complexity.

The "paperless office" is a bad idea because paper is one of the most useful and valuable media ever invented. "On paper" is a good place for information you want to use; a bad place for information you want to store.

For years, computer scientists were treating operating systems design as sort of an open-reserch issue, when the field's direction had been decided by commercial operations. Computer science has become completely cut off from reality.