What are the most relevant features of a Russellian world? The following strike me as especially important: (1) Such phenomena as minds, mental activities, consciousness, and so forth are the products of entities and causes that give no indication of being mental themselves. In Russell's words, the causes are "accidental collocations of atoms" with "no prevision of the end they were achieving." Though not stated explicitly by Russell, we might add the doctrine, a commonplace in modern science, that mental phenomena—and indeed life itself—are comparative latecomers in the long history of the earth. (2) Human life is bounded by physical death and each individual comes to a permanent end at his physical death. We might add to this the observation that the span of human life is comparatively short, enough so that in some cases we can, with fair confidence, predict the major consequences of certain actions insofar as they will affect a given individual throughout his whole remaining life. (3) Not only each individual but also the human race as a species is doomed to extinction "beneath the debris of a universe in ruins."
(George I. Mavrodes, "Religion and the Queerness of Mortality [sic]," chap. 8 in Rationality, Religious Belief, and Moral Commitment: New Essays in the Philosophy of Religion, ed. Robert Audi and William J. Wainwright [Ithaca and London: Cornell University Press, 1986], 213-26, at 215-6)