Having the best product means nothing if the people won't buy it.

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

Isn't one of your first exercises in learning how to communicate to write a description of how to tie your shoelaces? The point being that it's basically impossible to use text to show that

Technology may change rapidly, but people change slowly. The principals [of design] come from understanding of people. They remain true forever.

When a device as simple as a door has to come with an instruction manual—even a one-word manual—then it is a failure, poorly designed.

Also note that invariably when we design something that can be used by those with disabilities, we often make it better for everyone

I believe that robots should only have faces if they truly need them

Design is really an act of communication, which means having a deep understanding of the person with whom the designer is communicating.

Innocence lost is not easily regained. The designer simply cannot predict the problems people will have, the misinterpretations that will arise, and the errors that will get made.

Knowing how people will use something is essential

Complexity is acceptable as long as it is intelligible and necessary. We want to avoid needless complications.

He was the second snowman to be melting away before her eyes, only this one was different. It was a paradox. The colder he became, the more he melted.

Always try to avoid repeating the same mistakes

Friendship is an art and very few persons are born with a natural gift for it.

Nationality is the miracle of political independence race is the principle of physical analogy.

Human beings aren't rational animals; we're rationalizing animals who want to appear reasonable to ourselves.

The greatest cure for love is still that time honoured medicine - love returned.

Let thy step be slow and steady, that thou stumble not.

Hardly a man will you find who could live with his door open.

If you see a man who has sinned and you do not pity him, the grace of God will leave you. Whoever curses bad people, and does not pray for them, will never come to know the grace of God.

One mighty deed can change the course of things; a lonely thought becomes omnipotent.