“…This, combined with an ontological principle of parsimony, or Ockham's Razor, naturally invites serious consideration of an alternative monism— mental monism, or ‘mentalism,’ as Robert Adams prefers to call it (Adams, ). Secondly, numerous recent philosophical analyses of Berkeley's arguments have lent renewed credence to the claim that his immaterialist thesis, or at least some form of mentalist monism, is true (e.g., Berman, ; Daniel, ; Daniel, ; Foster, ; Rickless, ; Roberts, ; Ward, ).…”