Russell: Pure Mathematics

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“We start, in pure mathematics, from certain rules of inference, by which we can infer that if one proposition is true, then so is some other proposition. These rules of inference constitute the major part of the principles of formal logic.” (p. 115) #Russell #mathematics #inference #logic

Russell, Bertrand, Mysticism and Logic and Other Essays. London: George Allen & Unwin LTD 111959.