Original sentence: His theory was one of the first humanistic theories and would influence many others, including Kelly, Maslow, and Rogers.Most human behavior, he believed, is motivated by something very different--functioning in a manner expressive of the self--which he called propriate functioning
Edited sentence: Allport is one of those theorists who was so right about so many things that his ideas have simply passed on into the spirit of the times.His theory is one of the first humanistic theories, and would influence many others, including Kelly, Maslow, and Rogers.Most human behavior, he believed, is motivated by something very different -- functioning in a manner expressive of the self -- which he called propriate functioning