Cumulative Record. Chapter 23: Current Trends in Experimental Psychology. Quote 31

We cannot remedy the situation by mere dialectic. We need to arrive at a theory of human behavior which is not only plausible, not only sufficiently convincing to be “sold” to the public at large, but a theory which has proved its worth in scientific productivity. It must enable us, not only to talk about the problems of the world, but to do something about them, to achieve the sort of control which it is the business of a science of behavior to investigate. The superiority of such a theory will then be clear and we shall not need to worry about its acceptance. (p. 358)