Confluence.

Aguilera, Flight Patterns of Swifts, n/d

I'm prepared now to use the wonderful word confluence, which of itself exists as a reality and a symbol in one. It is the only kind of symbol that for me as a writer had any weight, testifying to the pattern, one of the chief patterns, of human experience. Of course the greatest confluence of all is that which makes up the human memory - the individual human memory. My own is the treasure most dearly regarded by me, in my life and in my work as a writer. Here time, also, is subject to confluence. The memory is a living thing -- it too is in transit. But during its moment, all that is remembered joins, and lives -- the old and the young, the past and the present, the living and the dead.

Eudora Welty