" Several great men living in the last of the nineteenth and first of the twentieth century saw the splitting up of personality which was occurring. Henrik Ibsen in literature realized what was happening, Paul Cézanne in art, and Sigmund Freud in the science of human nature. Each of these men proclaimed that we must find a new unity for our lives. Ibsen showed in his play A Doll’s House that if the husband simply goes off to business, keeping his work and his family in different compartments like a good nineteenth-century banker, and treats his wife as a doll, the house will collapse. Cézanne attacked the artificial and sentimental art of the nineteenth century and showed that art must deal with the honest realities of life, and that beauty has more to do with integrity than with prettiness. Freud pointed out that if people repress their emotions and try to act as if sex and anger did not exist, they end up neurotic. And he worked out a new technique for bringing out the deeper, unconscious, “irrational” levels in personality which had been suppressed, thus helping the person to become a thinking-feeling-willing unity. "

― Rollo May , Man's Search for Himself