 For example, natural science, which is based on sense perception, aims at formulating laws which reflect certain features of the objects perceived. The scientist, then, is primarily concerned with looking for regularities in nature, employing what Maritain calls an “empiriological” approach (see Degrees of Knowledge, 1932 [1959: 178–180]; Philosophy of Nature, 1935 [1951: 49]). (An empiriological analysis is a non-philosophical and, specifically, non-ontological approach to understanding natural beings that does not seek to know them “in terms of their type of being or reality”, but only “in terms of their empirical manifestations” (Carlson 2012: 37). Such an analysis does not provide knowledge of the essence of natural beings. Maritain offers mathematical physics as an illustration of this approach.) The product of this method is what Maritain calls “perinoetical” knowledge.