Alexander Pruss
Georgetown University
The Principle of Sufficient Reason (PSR), despite its illustrious history and important applications, seems to have fallen on hard times. I will argue against the the most powerful criticism of the PSR, van Inwagen's argument that it entails PSR. I will also give three positive considerations in favor of the PSR: an argument from the ceteris paribus nature of laws, a careful argument based on counterfactuals, and an argument that the best account of modal claims entails the PSR.