The system should treat all user input as sacred.

A computer shall not waste your time or require you to do more work than is strictly necessary.

As far as the customer is concerned, the interface is the product.

If I had not studied music, there would be no Macintosh computers today.

Right now, computers, which are supposed to be our servant, are oppressing us.

If our field is "to advance", we must - without displacing creativity and aesthetics - make sure our terminology is clear.

I am confident that we can do better than GUIs because the basic problem with them (and with the Linux and Unix interfaces) is that they ask a human being to do things that we know experimentally humans cannot do well. The question I asked myself is, given everything we know about how the human mind works, could we design a computer and computer software so that we can work with the least confusion and greatest efficiency?