But the count did not answer. Mercedes opened the door of the study and had disappeared before he had recovered from the painful and profound revery into which his thwarted vengeance had plunged him. The clock of the Invalides struck one when the carriage which conveyed Madame de Morcerf away rolled on the pavement of the Champs-Elysees, and made Monte Cristo raise his head. "What a fool I was," said he, "not to tear my heart out on the day when I resolved to avenge myself!"