As conscious beings advance in mental growth, they come to recognise that this ideal must embrace not merely their own kin or neighbours, not only their tribe or nation, not only the whole race or species, but all conscious beings whatever, no matter how foreign. It is surely probable that this desire for the fulfilment of personality-in-community plays a very large part in the universe. We must remember, of course, that the particular forms which it may take in different kinds of worlds, up and down the universe, may be utterly alien to our comprehension and appreciation. Or rather, not utterly alien; since, if these arguments are correct, there is an essential underlying kinship and identity in all possible kinds of conscious being.

Chapter VII: Ethics - Philosophy and Living (1939)