EINSTEIN, ALBERT. Typed letter signed ("A.Einstein") to Roy Wood Seltara, Princeton, (N.J.), 15 February 1946. 1 page, 4to, return address embossed at head of sheet, with original envelope. Einstein responds regarding a scientific theory proposed by his correspondent. : "I have studied your manuscript and to a certain extent grasped your problem. You are trying to manage without the continuum and to develop the whole of physics 'out of matter', as the fundamental concept. I am convinced that physics cannot accomplish that. With other words: 'realism' is possible, 'materialism' is not. I regret to lack the time to give you the reasons here; I should find it desirable to discuss the problems with you ... if the occasion could be found ..."

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EINSTEIN, ALBERT. Typed letter signed ("A.Einstein") to Roy Wood Seltara, Princeton, (N.J.), 15 February 1946. 1 page, 4to, return address embossed at head of sheet, with original envelope. Einstein responds regarding a scientific theory proposed by his correspondent. : "I have studied your manuscript and to a certain extent grasped your problem. You are trying to manage without the continuum and to develop the whole of physics 'out of matter', as the fundamental concept. I am convinced that physics cannot accomplish that. With other words: 'realism' is possible, 'materialism' is not. I regret to lack the time to give you the reasons here; I should find it desirable to discuss the problems with you ... if the occasion could be found ..."