My father learned to spell out words even when he was quite an old man, in order to be able to read at least the titles of my books. I followed him with excitement in Berlin in 1910, when he perseveringly tried to understand my book on German Social Democracy. ###>Je l'observais avec émotion, en 1910, à Berlin, quand il mettait toute son application à comprendre le livre que j'ai écrit sur la social démocratie allemande. '