"Any necessary truth, whether a priori or a posteriori, could not have turned out otherwise"

In this quote, philosopher Saul Kripke is going over the idea of necessary realities. An essential reality is a statement or truth that holds true in all possible worlds and can not be false. Kripke argues that whether an essential fact is known through reason (a priori) or through experience (a posteriori), it could not have been any other method. This indicates that these truths are not dependent on our understanding or understanding of them, but rather they are inherent and unchangeable. Kripke's declaration highlights the concept that particular realities are fundamental and unalterable, no matter our knowledge or beliefs about them.