"There is no consensus amongst philosophers about what the word "rationality" even means. According to one tradition, for instance, rationality is the application of logic, of pure thought untempered by emotions; this pure, objective thought is then seen as the basis of scientific inquiry. This has attained a great deal of popular purchase, but there's a fundamental problem: scientific inquiry itself has proved it cannot possibly be true. Cognitive psychologists have demonstrated again and again that there is no such thing as pure thought divorced from emotions; a human being without emotions would not be able to think at all. (p. 165)"