An American existential psychologist. Rollo May (April 21, 1909 – October 22, 1994) was an American existential psychologist. He authored the influential book Love and Will during 1969. He is often associated with both humanistic psychology and existentialist philosophy. May was a close friend of the theologian Paul Tillich. His works include Love and Will and The Courage to Create, the latter title honoring Tillich's The Courage to Be.
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