The letter was found in Mémoires et Correspondance de Duplessis-Mornay, vol. 10 (Russell's Library, no. 847). "Many thanks for sending me your 'Paradoxical Sonnets'. I have read them all with a great deal of interest and, although they express a variety of moods, I have no difficulty in sympathizing with all of them. The world is too complex for a sensitive person to be able to sustain any single state of feeling."