“Such usually unconscious [reincarnational] knowledge is of great benefit to the species itself, so that at certain levels, at least, the knowledge of the species is not imprisoned within any given generation at once, but flows or circulates within the overall larger reincarnational picture. Probabilities are very much involved here, of course, and it is easier for particular events to fall within one time sequence than another.
“I do not want you to feel that you are fated to experience certain events, however, for that is not the case. There will be “offshoots” of the events of your own lives, however, that may appear as overlays in your other reincarnational existences. There are certain points where such events are closer to you than others, in which mental associations at any given time may put you in correspondence with other events of a similar nature in some future or past incarnation, however. It is truer to say that those similar events are instead time versions of one larger event. As a rule, you experience only one time version of any given action. Certainly it is easy to see how a birthday or anniversary, or particular symbol or object, might serve as an associative connection, rousing within you memories of issues or actions that might have happened under similar circumstances in other times.”
(Dreams, “Evolution” and Value Fulfillment Vol 2, Session 931)