"If left to themselves, human affairs can only follow the law of mortality, which is the most certain and the only reliable law of a life spent between birth and death. It is the faculty of action that interferes with this law because it interrupts the inexorable automatic course of daily life, which in its turn, as we saw, interrupted and interfered with the cycle of the biological life process. The life span of man running toward death would inevitably carry everything human to ruin and destruction if it were not for the faculty of interrupting it and beginning something new, a faculty which is inherent in action like an ever-present reminder that men, though they must die, are not born in order to die but in order to begin. Yet just as, from the standpoint of nature, the rectilinear movement of man’s life-span between birth and death looks like a peculiar deviation from the common natural rule of cyclical movement, thus action, seen from the viewpoint of the automatic processes which seem to determine the course of the world, looks like a miracle. In the language of natural science, it is the 'infinite improbability which occurs regularly.' Action is in fact, the one miracle-working faculty of man, as Jesus of Nazareth, whose insights into this faculty can be compared in their originality and unprecedentedness with Socrates’ insights into the possibilities of thought, must have known very well when he likened the power to forgive to the more general power of performing miracles, putting both on the same level and within the reach of man.
The miracle that saves the world, the realm of human affairs, from its normal, 'natural' ruin is ultimately the fact of natality, in which the faculty of action is ontologically rooted. It is, in other words, the birth of new men and the new beginning, the action they are capable of by virtue of being born. Only the full experience of this capacity can bestow on human affairs faith and hope, those two essential characteristics of human experience which Greek antiquity ignored altogether, discounting the keeping of faith as a very uncommon and not too important virtue and counting hope among the evils of illusion in Pandora’s box. It is this faith in and hope for the world that found perhaps its most glorious and most succinct expression in the few word with which the Gospels announced their 'glad tidings': 'A child has been born unto us.'"