Ref: Wikipedia I don't have this article, so my first request is that if anyone has it and can either post it or (if concerned about copyright issues) you could email it to me, that would be appreciated. I may need it as a reference for a paper I'm working on, and I can't seem to locate it on the net and don't have access to it. This quote of Einstein seems to be bantered around quite a bit. A few questions: 1. Do you believe Einstein meant this principal to apply only at the quantum level, or do you think he wasn't differentiating between classical and quantum mechanics (ie: the principal of locality is a fundamental principal of nature)? It seems to me as if Einstein was simply applying the same philosophy used in classical mechanics to quantum mechanics. This would say that the principal of locality is applicable to classical mechanics regardless of whether it can be applied to quantum mechanics. 2. Would it be wrong to quote this principal with respect to classical mechanics only? When we consider the time evolution of a phenomenon such as the flight of an aircraft or rocket, or the response of a bridge to loads induced by vortex shedding (ie: Tacoma Narrows bridge), I would think this principal was applicable. But if the intent of this phrase is specifically to address quantum mechanical phenomena, then it's questionable if one could quote Einstein in this regard, saying something to the affect, "The principal of locality is applicable to the interaction of matter and energy at the classical level."