And in a flash I understood the meaning of sex. It is a craving for the mingling of consciousness, whose symbol is the mingling of bodies. Every time… - Colin Wilson

When Shaw is read in the light of the existentialist thinkers, a new philosophical position arises from his works as a whole, a position of he himself was probably unconscious. It is this: that although the ultimate reality may be irrational, yet man's relation to it is not. Existentialism means the recognition that life is a tiny corner of casual order in a universe of chaos. All men are aware of that chaos; but some insulate themselves from it and refuse to face it. These are the Insiders, and they make up the overwhelming majority of the human race. The Outsider is the man who has faced chaos. If he is an abstract philosopher — like Hegel — he will try to demonstrate that chaos is not really chaos, but that underlying it is an order of which we are unaware. If he is an existentialist, he acknowledges that chaos is chaos, a denial of life — or rather, of the conditions under which life are possible. If there is nothing but life and chaos, then life is permanently helpless — as Sartre and Camus think it is. But if a rational relation can somehow exist between them, ultimate pessimism is avoided, as it must be avoided if the Outsider is to live at all. It is this contribution which makes Shaw the key figure of existentialist thought.

Self-expression is impossible in relation with other men; their self-expression interferes with it. The greatest heights of self-expression in poetry, music, painting – are achieved by men who are supremely alone.

...the Outsider's problem is the problem of denial of self-expression.