摘要：This paper examines the cosmological argument, as expounded by Alexander R. Pruss and Robert C. Koons. The PSR is the most controversial premise in the cosmological argument for the existence of God. The Principle of Sufficient Reason (PSR) says that, necessarily, every contingently true proposition has an explanation. Alexander R. Pruss presented a natural restricted version of the PSR. Also, Robert C. Koons developed new version of cosmological argument based on mereological approach. As a result, cosmological argument still remains viable options for theists.
