The historian initially marks off his subject matter from the past's welter or continuum by emphasizing the unique color and tone of the events he has selected. He, therefore, appears to be preoccupied with the transient and, as we may say, in self-preoccupation, with mortality. But the point about our mortality is that, as we have so far had successors, our transiency is within a cycle of death and birth. From this cycle some of our works escape, perhaps to join a larger cycle. Flux has, then, no unlimited dominion. If we cannot step twice into quite the same river, our words win a metaphysical triumph for constancy when we define river as embanked watery flux. Still more happily, at any rate so far as the present occasion is concerned, some of our institutions endure. This endurance of St. Mary's and its promise for the future are what we celebrate.