 Mach, James, and Russell agree that neutral monism solves the mind-body problem. Russell’s account of experience (of perceptual consciousness) may serve as an illustration of the point. Russell frequently emphasized the miracle or mystery involved in traditional accounts of perception (1927b: 147, 154; 1927a: 275, 400). At the end of a purely physical chain of causes there mysteriously arises something of a completely different nature: an experience (a sensation of red, say). This is the hard problem of consciousness. The neutral monist solves this problem by maintaining that “we cannot say that ‘matter is the cause of our sensations” (1927b: 290). Mach agrees: “Bodies do not produce sensations” (Mach 1886: 29). To suggest otherwise is to rely on “the monstrous idea of employing atoms to explain psychical processes” (Mach 1886: 311). Matter/bodies are, after all, nothing but collections of neutral entities, i.e., of Russellian events or Machian elements. So mind-body causation reduces to causal relations among events or elements. And, for all we know, the event/element causing a sensation may be quite similar to the sensation it causes. This closes the apparent chasm between the “material process” and the ensuing experience, and the mystery of perception vanishes.