Some months ago I read the Introduction of Practical Thinking by Professor Dr. Edward De Bono. I’m not sure if the above quote about me is parallel to De Bono’s definition, but this is what the Prof had to say about it,

As soon as one can talk about thinking one is on the way to regarding it as a skill like playing tennis or cooking. Far too many people regard thinking as a matter of inborn intelligence – which is not. In my researches and experiments I have again and again come across very intelligent people who turned out to be very poor thinkers. Nor have I found that thinking skill has much to do with education, for some of the best educated people (Ph.D.s, university lecturers and professors, senior business executives, etc.) have also been poor thinkers. To regard thinking as a skill rather than as a gift is the first step towards doing something to improve that skill.