Edward de Bono - Logical Quotes

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The rejection process is incorporated in the concept of the negative. The negative is a judgement device. It is the means whereby one rejects certain arrangements of information. The negative is used to carry out judgement and to indicate rejection. The concept of the negative is crystallized into a definite language tool. This language tool consists of the words no and not. Once one learns the function and use of these words one has learned how to use logical thinking. The whole concept of logical thinking is concentrated in the use of this language tool. Logic could be said to be the management of NO.

Edward de Bono
Some people are aware of another sort of thinking which…leads to those simple ideas that are obvious only after they have been thought of…the term 'lateral thinking' has been coined to describe this other sort of thinking; 'vertical thinking' is used to denote the conventional logical process.

Edward de Bono
Lateral thinking is closely related to insight, creativity and humour. All four processes have the same basis. But whereas insight, creativity and humour can only be prayed for, lateral thinking is a more deliberate process. It is as definite a way of using the mind as logical thinking — but a very different way.

Edward de Bono
The concept of logical thinking is selection and this is brought about by the processes of acceptance and rejection. Rejection is the basis of logical thinking.

Edward de Bono
Pouncing on an idea as soon as it appears kills the idea. Too early and too enthusiastic logical attention either freezes the idea or forces it into the old moulds. Concentration on an idea isolates it from its surroundings and arrests its growth. The glare of attention inhibits the fertile semi-conscious processes that go to develop an idea.

Edward de Bono
Every valuable creative idea must always be logical in hindsight. If it were not, we would never be able to see its value.

Edward de Bono