In 1794, at the age of 21, Gleïzès married Aglae de Baumelle, daughter of a writer of some repute. At this time he seems to have entertained the hope of instructing his countrymen, by engaging in public teaching; but, disappointed in a scheme for the inauguration of a course of historical lectures in the central school of his department, he retired altogether from the active business of the world, and settled down in a happy and peaceful home, in a small château belonging to his wife, at the foot of the Pyrenees near Mezières. It was here, amidst the magnificent solitudes of Nature, that in 1798, in his twenty fifth year, he determined upon abandoning for ever the diet of blood and slaughter. Until the moment of his death, forty-five years later, his diet consisted solely of milk, fruits, and vegetables. So great was his scrupulousness, that there might be no possibility or mistake Gleïzès prepared his own food; and he always ate alone (his wife being unable or unwilling to follow his loftier aims), since he could not endure either the smell or the sight of the ordinary dishes. And this intense aversion it was, indeed, that compelled him to forego in great measure his intercourse with the world, or, at all events, to shun the ordinary celebrations of social “festivity.” Full of enthusiastic belief that the transparent truth and sublimity of his creed could not fail to commend themselves to the better spirits of the age amongst his countrymen, Gleïzès addressed himself to some of the more thoughtful of his contemporaries; amongst others to Lamartine, Lamennais, and Chateâubriand. Lamartine--the author of the _Fall of an Angel_, in which he gives expression to his akreophagistic sympathies--responded, if not with the enthusiasm that might justly have been expected from the author of that poem, at least in a friendly spirit. The others kept silence. This indifferentism of those who should have been the first to lend the support of their names naturally affected him; and made much more sensible the intellectual and moral isolation of his existence. He was not left quite alone, however. There were found three or four minds of a loftier reach who had the courage of their convictions, and followed them out to their logical conclusion. These were Anquetil (the author of _Recherches sur les Indes_), Charles Nodier, Girod de Chantrans, and Cabantous, dean of the Faculty of Letters at Toulouse. His brother, Colonel Gleïzès, a member of the Academy of Sciences of the same university, also declared for the reformation. It is superflous to say that these converts were all men of superior moral calibre to their contemporaries, however high they might be exalted by popular estimates of worth.