The topics “the first causes of things” and “unchanging things”—have continued to interest metaphysicians, though they are not now seen as having any important connection with the topic “being as such”. The first three of Aquinas's Five Ways are metaphysical arguments on any conception of metaphysics. Additionally the thesis that there are no first causes and the thesis that there are no things that do not change count as metaphysical theses, for in the current conception of metaphysics, the denial of a metaphysical thesis is a metaphysical thesis. No post-Medieval philosopher would say anything like this: