The publication of this exchange of letters is in some ways unique, and of great religious and philosophical significance. The two men are of absolutely outstanding eminence and influence, and each in his way of outstanding experience. They are of the same generation, Claudel born in 1868, Gide in 1869. They were friends and have long since fallen apart. They stand for two absolutely opposite conceptions of man’s duty and destiny.

During his recent visit to Rome, Claudel told an Italian interviewer (Mario Guidotti) that neither he nor Gide had taken the initiative in publishing this correspondence. It came from Robert Mallet, a friend of Gide’s (who has supplied the letters with a minute and enlightening factual commentary). Claudel consented, in the hope of exercising a moral influence: ‘I should like the letters to do good today to young people whom Gide may have harmed: the good that I tried to do, unhappily in vain, to a great writer and friend’.

Both correspondents hold strongly to what they stand for. Both have allowed the letters to be supplemented by other documents: passages from Gide’s Journals, and one from a literary interview of 1947 in which Claudel utterly disavows the other’s position. That position is indicated in a typical passage picked out by the English, or rather American, translator of the Journals: ‘In the name of what God, of what ideal, do you forbid me to live according to my nature; And where would that nature lead me if I simply followed it? Until now I had followed the rule of Christ, or at least a certain puritanism that had been taught me as the rule of Christ.