Only the human brain can deliberately change perceptions, change patterns, invent concepts and tolerate ambiguity.

Unfortunately, our existing traditional thinking habits insist that you must attack something and show it to be bad before you can suggest a change. It is more difficult to acknowledge that something is excellent and then to ask for change because although it is excellent, it is not enough.

The vertical thinker says: 'I know what I am looking for.' The lateral thinker says: 'I am looking but I won't know what I am looking for until I have found it.'

Removing the faults in a stage-coach may produce a perfect stage-coach, but it is unlikely to produce the first motor car.

America is not just a country, it's an idea.

The awful thing is that you can never be aware of what you are not aware of.

Most of the mistakes in thinking are inadequacies of perception rather than mistakes of logic.