In his maturity the Star Maker conceived many strange forms of time. For instance, some of the later creations were designed with two or more temporal dimensions, and the lives of the creatures were temporal sequences in one or other dimension of the temporal "area" or "volume." These beings experienced their cosmos in a very odd manner. Living for a brief period along one dimension, each perceived at every moment of its life a simultaneous vista which, though of course fragmentary and obscure, was actually a view of a whole unique "transverse" cosmical evolution in the other dimension . . . In other creations a creature was given only one life, but this was a "zig-zag" line, alternating from one temporal dimension to another according to the quality of the choices that the creature made. Strong or moral choices led in one temporal direction, weak or immoral choices in another. In one inconceivably complex cosmos, whenever a creature was faced with several possible courses of action, it took them all, thereby creating many distinct temporal dimensions and distinct histories of the cosmos. Since in every evolutionary sequence of the cosmos there were very many creatures, and each was constantly faced with many possible courses, and the combinations of all their courses were innumerable, an infinity of distinct universes exfoliated from every moment of every temporal sequence in this cosmos.
—Olaf Stapledon, Starmaker