With respect to the various ways in which these beings are conceived as existing for men and determining their activities, Boström divides philosophy into theoretical philosophy, the science of these beings conceived as determining man's theoretical faculty, i.e., conceived as in every respect true and original being; and practical philosophy, the science of these beings conceived as determining the practical faculty, or will, of man, i.e., conceived as that which unconditionally and under all circumstances ought to be. According to the different kinds of personal beings that are known to us, theoretical philosophy is further divided into speculative theology, speculative ethnology and speculative anthropology; practical philosophy into philosophy of religion, philosophy of law and ethics, corresponding to the terms of the division of theoretical philosophy