 Philosophy of Language. Outside of the strictly metaphysical debates, Bradleyean arguments are often brought up when discussing the problem of the unity of the proposition. This problem in philosophy of language is usually put as follows: what is the difference between a mere list of words such as "wise, Alice, is" and a meaningful sentence such as "Alice is wise"? The latter seems to possess a unity of some sort, but what is the exact nature of such unity and how does it come about? In analogy with the ontological version of Bradley’s regress, philosophers then worry that an appeal to a copula does not explain what it is that is special about the unity present in “Alice is wise” and absent in a mere list. And no appeal to further copulas will help the matters either.