Psychologist Quotes and aphorisms about himself Carl Jung ,, Just as we might take Darwin as an example of the normal extraverted thinking type, the normal intr... Carl Jung Sigmund Freud Abraham Maslow Abraham Maslow Jean Piaget Viktor E. Frankl ,, In a position of utter desolation, when man cannot express himself in positive action, when his onl... Viktor E. Frankl Viktor E. Frankl Alfred Adler