Roger MARTIN DU GARD (1881-1958). L.A.S., Sauveterre April 29, 1932, to archaeologist Félix Sartiaux (1876-1944); 4pages in-8. On the subject of a lecture by Sartiaux [Qu'est-ce que la civilisation? for the Union rationaliste], from which he especially retained "the distinction, which is dear to you - and whose essential importance we can measure every day, as soon as we come into contact with other minds - between judgments of value and judgments of existence. (The excellent page on progress, which, for me, suddenly sheds light on very obscure areas. The astonishing definition of thought, and of progress, in thought. What you say about play. The relationship between the moral function and the legal function, and the idea of progress in these functions. The great perspectives that your pages on the stages of civilization open up with such decision and acuity; so striking"... Etc. Attached is a L.A.S., Bellême August 2, 1947, about Sweden and the Swedes.