I would have been glad to agree to let them all proceed henceforth in complete ignorance of psychology, if they would forget my opinion of chocolate sodas or the story of the amusing episode on a Spanish streetcar.

Theories — whether neural, mental, or conceptual — talk about intervening steps in these relationships. But instead of prompting us to search for and explore relevant variables, they frequently have quite the opposite effect. When we attribute behavior to a neural or mental event, real or conceptual, we are likely to forget that we still have the task of accounting for the neural or mental event. ...Research designed with respect to theory is also likely to be wasteful. That a theory generates research does not prove its value unless the research is valuable. Much useless experimentation results from theories, and much energy and skill is absorbed by them. Most theories are eventually overthrown, and the greater part of the associated research is discarded.

One person manages another in the sense that he manages himself. He does not do so by changing feelings or states of mind. The Greek gods were said to change behavior by giving men mental states such as pride, mental confusion, or courage, but no one has been successful in doing so since. One person changes the behavior of another by changing the world in which he lives. In doing so, he no doubt changes what the other person feels or introspectively observes.