Marc Bloch coined a memorable phrase to sum up the attitude supposedly held by medieval men towards time: ‘a vast indifference to time’. Chroniclers, who were sparing with dates, supposedly expressed this indifference in vague terms: ‘at the time then’, ‘meanwhile’, and ‘a little after’. Above all, at the level of the collective mentality, past, present, and future were mixed together in a fundamental confusion. This confusion was particularly obvious in the persistence of collective responsibilities, which were a clear expression of primitivism. All living men bore equal responsibility with Adam and Eve for the Fall, all contemporary Jews bore equal responsibility for the Passion of Christ, and all the Muslims bore equal responsibility for Mahomet’s heresy. As has been observed, the crusaders at the end of the eleventh century did not think that they were going to punish the descendants of Christ’s executioners, but the executioners themselves.
— Jacques Le Goff - Medieval Civilization