[2][3] Embraced as a victim of German "Kultur", Lemordant became an inspirational speaker, talking about the effects of his blindness, and the role of the artist in society.

In 1919 he was awarded the Howland Memorial Prize and his works were exhibited at Yale University;[4] the retrospective exhibit also was shown at the Gimple and Wildenstein Galleries in New York,[5] and toured the United States under the auspices of the American Federation of Art.

In 1926, he was made a Commandeur of the Légion d'Honneur, and was carried through the Grand Palais on the shoulders of the greatest artist of the day.

Lemordant was made Professor of Esthetics at the École des Beaux-Arts, for life.

In 1927, he acquired a site on the Avenue-René-Coty, and designed, with the assistance of Jean Launay, the Hôtel Lemordant to be erected there.