An open attitude toward experience makes possible accumulation of experience with relatively little compartmentaliza-tion; independence of perception, cognition, and behavior permit greater than average reordering of this accumulated experience (the behavioral eccentricities so often noted are consistent with this). The strong liking for turning disorder into order carries such individuals through the searching period which their tolerance for ambiguity permits them to enter. The strong egos, as noted, permit regression to prelogical forms of thought without serious fear of failure to get back to logical ones. Preoccupation with things and ideas rather than with people is obviously characteristic of natural scientists, and even of some social scientists. This characteristic is not directly related to creativity but rather to the content of it. That a man chooses to become a scientist and succeeds means that he has the temperament and personality as well as the ability and opportunity to do so. The branch of science he chooses, even the specific problems he chooses and the way he works on them, are intimately related to what he is and to his deepest needs. The more deeply engaged he is, the more profoundly is this true. To understand what he does, one must try to know what his work means to him. The chances are that he does not know or care to know. Indeed, he does not need to know. We do.