Without being forgiven, released from the consequences of what we have done, our capacity to act would, as it were, be confined to one single deed from which we could never recover; we would remain the victims of its consequences forever, not unlike the sorcerer’s apprentice who lacked the magic formula to break the spell. Without being bound to the fulfillment of promises, we would never be able to keep our identities; we would be condemned to wander helplessly and without direction in the darkness of each man’s lonely heart, caught in its contradictions and equivocalities – a darkness which only the light shed over the public realm through the presence of others, who confirm the identity between the one who promises and the one who fulfills, can dispel. Both faculties, therefore, depend on plurality, on the presence and acting of others, for no one can forgive himself and no one can feel bound by a promise made only to himself; forgiving and promising enacted in solitude or isolation remain without reality and can signify no more than a role played before one’s self.

The key to the “predicament of irreversibility” is forgiveness.