No artist can develop without increasing his self-knowledge; but self-knowledge supposes a certain preoccupation with the meaning of human life and the destiny of man. A definite set of beliefs — Methodist Christianity, for example — may only be a hindrance to development; but it is not more so than Beckett's refusal to think at all. Shaw says somewhere that all intelligent men must be preoccupied with either religion, politics, or sex. (He seems to attribute T. E. Lawrence's tragedy to his refusal to come to grips with any of them.) It is hard to see how an artist could hope to achieve any degree of self-knowledge without being deeply concerned with at least one of the three.

p. 197 - The Strength To Dream (1961)