Full Idea
Given empirical evidence for the approximate intertranslatability of all human languages, and a universal innate basis of human cognition, we may wonder how 'other' any human culture really is.
Gist of Idea
If languages are intertranslatable, and cognition is innate, then cultures are all similar
Source
Timothy Williamson (The Philosophy of Philosophy [2007], 8.1)
Book Reference
Williamson,Timothy: 'The Philosophy of Philosophy' [Blackwell 2007], p.251
A Reaction
This seems to be a fairly accurate account of the situation. In recent centuries people seem to have been over-impressed by superficial differences in cultural behaviour, but we increasingly see the underlying identity.