BEFORE perusing this work, it is as well that the reader should understand M. Zola's aim in writing it, and his views—as distinct from those of his characters—upon Lourdes, its Grotto, and its cures. A short time before the book appeared M. Zola was interviewed upon the subject by his friend and biographer, Mr. Robert H. Sherard, to whom he spoke as follows:
"'Lourdes' came to be written by mere accident. In 1891 I happened to be travelling for my pleasure, with my wife, in the Basque country and by the Pyrenees, and being in the neighbourhood of Lourdes, included it in my tour. I spent fifteen days there, and was greatly struck by what I saw, and it then occurred to me that there was material here for just the sort of novel that I like to write—a novel in which great masses of men can be shown in motion—un grand mouvement de foule—a novel the subject of which stirred up my philosophical ideas...