The thesis of this paper is that there are two styles of creativity; one a measured, problem-solving approach to the development of new knowledge, and the other, an emotional, and comparatively uncontrolled, free expression. This duality has a long tradition, for example, the distinction made in the 18th Century between Enlightenment (or Classicism) and Romanticism, in the 19th Century, and in the zone between the "two cultures," scientific and literary. This paper investigates whether corresponding styles of creativity can be discovered. A study was reported in which two types of behavior appeared a permissive, expressive type, and a controlled, coping type. Both of these correlated positively with self- reported creativity. A second study contrasted the correlates of originality on tests of divergent thinking with originality on projective tests. Two clusters emerged, one representing competent, stable, resourceful personalities who scored high on divergent thinking tests of originality, the other representing impulsive, emotionally expressive, imaginative persons who scored high on projective test originality. It was concluded that there are two creativity styles corresponding to the two types of cognitive process, and these styles were labeled "cold" creativity and "hot" creativity. Both styles play a part, in varying proportions, in any creativity process Performance on the divergent thinking tests of originality is more closely related to cold than hot creativity and, therefore, the distinction does not correspond with that between convergent and divergent thinking. Nor does it correspond with differences between scientific and artistic interests and creativity.