Jung goes on to describe five basic instinctual groups which he calls, in short: hunger, sexuality, the drive to activity, reflection, and, last of all, a creative instinct. The first four are comparable to Konrad Lorenz' major groups: feeding, reproduction, aggression, and flight. Aggression can be the analogue to Jung's "drive to activity,"and flight the analogue to Jung's "reflection," which is, as he describes it, a reflexio, a "bending back" away from the stimulus, a "turning inward," away from the world and the object in favor of psychic images and experiences. Lorenz does not mention the fifth instinct, creativity; but then he speaks from observations of animal behavior, while Jung speaks from the study of people.
If we accept the hypothesis of a creative instinct, then this instinct, too, must be subject to psychization. Like other drives, it can be modified by the psyche and be subject to interrelation and contamination with sexuality, say, or activity. (But neither one's sexual drive, nor productive activity in the world, nor reflective consciousness, nor contentious ambition is the ground or manifestation of one's creativity.) Moreover, as an instinct, the creative is able to produce images of its goal and to orient behavior toward its satiation. As an instinct, the creative is a necessity of life, and the satisfaction of its needs a requirement for life. In the human being, creativity, like the other instincts, requires fulfillment.