Attractive things work better.

The hardest part of design ... is keeping features out.

It was always amusing to be inside Apple and read what journalists said we were doing

I'm not a fan of technology . I'm a fan of pedagogy, of understanding how people learn and the most effective learning methods. But technology enables some exciting changes.

In the university, professors make up artificial problems. In the real world, the problems do not come in nice, neat packages. They have to be discovered.

It is relatively easy to design for the perfect cases, when everything goes right, or when all the information required is available in proper format

Scientists are always skeptics.