Edward de Bono

"Unhappiness is best defined as the difference between our talents and our expectations."

"Studies have shown that 90% of error in thinking is due to error in perception. If you can change your perception, you can change your emotion and this can lead to new ideas."

"Most executives, many scientists, and almost all business school graduates believe that if you analyze data, this will give you new ideas. Unfortunately, this belief is totally wrong. The mind can only see what it is prepared to see."

"I think there is a danger with young people of being dependent in the sense that they dont acquire any identity or self-image of themselves as thinkers. They just go and look it up or they just chat with someone. In other words, relying on something rather than saying: "Okay, Ive got the information, how do I create value from it?"

"Instead of striving to be right at high cost, it will be more appropriate to be flexible and plural at a lower cost. If you cannot accurately predict the future then you must flexibly be prepared to deal with various possible futures."

"Humour is by far the most significant activity of the human brain."