That is for the philosopher to determine.

On the other hand, philosophy can help anthropology in two ways: in its critical capacity, by helping it to guard its own claim, and develop freely without interference from outsiders; and in its synthetic capacity, perhaps, by suggesting the rule that, of two types of explanation, for instance, the physical and the biological, the more abstract is likely to be farther away from the whole truth, whereas, contrariwise, the more you take in, the better your chance of really understanding.
It remains to speak about policy.

I use this term to mean any and all practical exploitation of the results of science.

Sometimes, indeed, it is hard to say where science ends and policy begins, as we saw in the case of those gentlemen who would doctor their history, because practically it pays to have a good conceit of ourselves, and believe that our side always wins its battles.

Anthropology, however, would borrow something besides the evolutionary principle from biology, namely, its disinterestedness.