"There can be no scientific thought without repression. Repression is at the origin of concentrated, reflective and abstract thought. Every coherent thought is constructed on a system of sound, clear inhibitions. There is a joy in accepting limitations inherent in all joy of learning. It is insofar as it is joyful that a well founded repression becomes dynamic and useful." (p. 100) The Psycho-analysis of Fire, Quartet Books, 1987