[Footnote 17: The abbe de Sade, who so freely expatiates on
the history of the xivth century, might treat, as his proper
subject, a revolution in which the heart of Petrarch was so
deeply engaged, (Memoires, tom. ii. p. 50, 51, 320 - 417,
notes, p. 70 -76, tom. iii. p. 221 - 243, 366 - 375.) Not an
idea or a fact in the writings of Petrarch has probably
escaped him.]