The philosophical texts of George Berkeley contain many references to the “relativity” of sensible qualities, that is, to their variation when perceived by different observers; and several of his arguments for immaterialism employ this concept. Many interpreters in this century have minimized the significance and impugned the validity of this argument. Warnock ridicules it as a sophism based on a “fantastic assumption,” and Johnston gives it short shrift. Jessop considers the relativity argument an ad hominem insufficient to demonstrate immaterialism. Indeed, (...) both Jessop and Luce so dilute the entire relativity element in Berkeley that, while he remains an idealist, he comes out assenting, in levelheaded fashion, to nearly absolute sensible objects which persist through time and are available to a plurality of perceivers. (shrink)