Ralph Barton Perry,
The Approach to Philosophy
“ To reconcile these, or the course of nature, with the fundamental definition of being, is the problem of cosmology. Cosmology is the construing of the prima facie reality in terms of the essential reality. It is the proof and the explanation of ontology. Since the most familiar part of the prima facie reality, the part almost exclusively noticed by the naive mind, is embraced within the field of the physical sciences, the term cosmology has come more definitely to signify the philosophy of nature. ”
