 In addition to their pivotal role in deciding questions of existence, notions of what is ultimate profoundly impact questions about religious diversity, such as whether multiple religions can have simultaneously true core beliefs. For example, on “plenitude of being” models—where the ultimate is infinitely full of incommensurable content—multiple religions are taken to be grasping different aspects of it accurately. So multiple religions can have true beliefs about what is ultimate, even if each has only a part of the truth. Finally, models of what is ultimate are also intimately bound up with philosophical questions of meaning, e.g., in meaning’s “Cosmic” and “Ultimate” senses as Rivka Weinberg explains them, though she decides that even if there were something ultimate, it would not finally deliver meaning in either sense (2021).