The proper study of mankind is the science of design.

Human knowledge has been changing from the word go and people in certain respects behave more rationally than they did when they didn't have it. They spend less time doing rain dances and more time seeding clouds.

Enlightenments, like accidents, happen only to prepared minds.

Solving a problem simply means representing it so as to make the solution transparent.

One finds limits by pushing them.

Think of the design process as involving first the generation of alternatives and then the testing of these alternatives against a whole array of requirements and restraints.

The social sciences, I thought, needed the same kind of rigor and the same mathematical underpinnings that had made the 'hard' sciences so brilliantly successful.