values became individual, causing skeptic schools of thought to flourish, ultimately shaping an ontologically objective philosophy that is thought to have contributed to Christian Philosophy. During the medieval period, Thomas Aquinas made the distinction between natural and supernatural (theological) virtues. This concept led philosophers to distinguish between judgments based on fact and judgments based on values, creating the division between science and philosophy. Intrinsic value Traditionally, philosophers held that an entity has intrinsic value if it is good in itself or good for its own sake. Intrinsic value is contrasted with extrinsic or instrumental value, which is ascribed to things that are valuable only as a means to something else. For example, tools like cars or microwaves are said to be extrinsically valuable by virtue of the function they perform, while the well-being they cause is intrinsically valuable, according to hedonism. The same entity can be valuable in different ways: some entities have both intrinsic and extrinsic values at the same time. Extrinsic values can form chains, in which one entity is extrinsically valuable because it is a means to another entity that is itself extrinsically valuable. It is commonly held that these chains must terminate somewhere and that the endpoint can only be intrinsically valuable. The distinction between intrinsic and extrinsic values is important for understanding various disagreements within axiology. Different substantive theories of value often agree on whether something, for example knowledge, is valuable while disagreeing on whether the value in question is intrinsic or extrinsic. The traditional conception of intrinsic value presented above has been criticized in contemporary philosophy on the grounds that it combines various distinct notions that are better discussed separately. One such contrast is between intrinsic and final values. On a more narrow conception, an intrinsic value is a value an entity has in virtue of its intrinsic properties. For example, assuming that the phenomenal aspect of a pleasant experience is an intrinsic property, we might say that the experience is intrinsically valuable because of this intrinsic property. An entity with final value, by contrast, is valuable for its own sake. It is usually accepted that there is a conceptual difference between intrinsic and final values. For example, the pleasure experience may be said to be intrinsically valuable on the one hand, and finally valuable on the other hand. But it has been disputed whether there are actual things where these value types can