For Shaw as for Goethe, the obligation to strive is a primary feeling: reason initiates nothing and would stop everything. Its use is to come after the fact and devise helpful justification of action. Culture, humaneness, spiritual grace, are not forced upon us by logic: they either are self-evident or pointless. There is, Shaw reminds us, no argument in behalf of moral conduct which would not equally well support immoral. But it is clearly impossible (and immoral) to exact moral conduct, cultivation, and grace from those whom circumstances force to lead sub-human lives. Therefore society must be reformed.

IV - Bernard Shaw in Twilight (1943)