Another advantage that we have over Aristotle is that we have learned... that self-realization cannot be attained by intellect or rationality alone. You remember that Aristotle had a hierarchy of human capacities in which reason took the top place. Along with this went inevitably the notion that reason contrasted with, struggled with, and was at odds with human emotional and instinctive nature. But we have learned... that we must modify considerably our picture of the psychological organism to respect equally rationality, emotionality, and the conative or wishing and driving side of our nature. Furthermore... we have learned these are definitely not at odds with each other, that these sides of human nature are not necessarily antagonistic but can be cooperative and synergic.
Source: Abraham H. Maslow, Motivation and Personality, 3rd ed. (Harper & Row, 1987), pg. 116.


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