Cumulative Record. Chapter 52: Can Psychology Be a Science of Mind? Quote 23

What, then, are we to make of the fact that for 100 years psychologists have tried to build just such a science of mind? What about the brilliant analyses that have been made of intelligence or the claims for the value of the concept of subjective expected utility or the equations that have been written to describe psychological space? Have these been parts of a search for something that does not exist? It appears that we must say so, but all is not lost. (p. 671)