Elsewhere I have set down, for whatever interest they have in this, the 25th Century, my personal recollections of the 20th Century. Now it occurs to me that my memoirs of the 25th Century may have an equal interest 500 years from now—particularly in view of that unique perspective from which I have seen the 25th Century, entering it as I did, in one leap across a gap of 492 years. This statement requires elucidation. There are still many in the world who are not familiar with my unique experience...