"Christmas is not only the telling of what has been; it is perception of what is. It is not only perception of a circumscribed and datable episode; it is savoring of a perennial and universally effective actuality; it is exultation over a richness that is given to us. The annotation that Christmas is after all a birthday would be enough to convince us of this. Now birthdays are for living men. For the dead-even if they are great and very famous-at most, centenarians are remembered. So to celebrate Christmas every year is to express the certainty that Jesus of Nazareth-that child born two thousand years ago in a stable-is a living person: he is really, truly, physically alive; he is still the principle of salvation for us; he is still the center of our every existence and of the whole of history."