“The mathematician requires tact and good taste at every step of his work, and he has to learn to trust to his own instinct to distinguish between what is really worthy of his efforts and what is not; he must take care not to be the slave of his symbols, but always to have before his mind the realities which they merely serve to express. For these and other reasons it seems to me of the highest importance that a mathematician should be trained in no narrow school; a wide course of reading in the first few years of his mathematical study cannot fail to influence for good the character of the whole of his subsequent work”

—  James Whitbread Lee Glaisher

Source: "Presidential Address British Association for the Advancement of Science," 1890, p. 467 : On the importance of broad training

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James Whitbread Lee Glaisher6
English mathematician and astronomer 1848–1928

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