When she (= Russell's grandmother) discovered that I was interested in metaphysics, she told me that the whole subject could be summed up in the saying: 'What is mind? no matter; what is matter? never mind.' At the fifteenth or sixteenth repetition of this remark, it ceased to amuse me, but my grandmother's animus against metaphysics continued to the end of her life.
Source: The Autobiography of Bertrand Russell, v.１, chap. 2: Adolescence
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