Plato and Einstein Probably Do Not Play Dice in Heaven
Einstein apparently was not comfortable with some important aspects of quantum mechanics, and among these were what looked like the probabilistic or random basic nature of the cosmos. He seems to have been convinced that the nature of the cosmos was determined either by the laws of physics or whatever caused the laws of physics to be what they are.
Plato would certainly have agreed with such a sentiment if his Timaeus accurately reflects his personal views on the nature and origin of the cosmos (which means something like “ordered thing” in Greek).
In Timaeus, Plato writes that the Demiurge crafted the cosmos out of some preexisting chaotic stuff using the Forms as blueprints. The Forms, according to Plato, are autonomous entities that subsist not in time-space, but in their own realm. They are perfect in every respect including rationality.
Einstein, it seems, sought a theory of the cosmos that would unify the observed characteristics of time-space with the seemingly unaccountable repercussions of quantum theory. This unified theory would presumably be describable in mathematical terms and, therefore, rational.
Plato seems also to have believed that the cosmos was ultimately rational, as it was crafted by a rational Demiurge using rational Forms as patterns or blueprints.
