| 123456 | author: Hermann Weylcontent: 'We now come to the decisive step of mathematical abstraction: we forget  what the symbols stand for. ...[The mathematician] need not be idle; there are many  operations which he may carry out with these symbols, without ever having to look  at the things they stand for.'id: ef45368b-aa92-4b27-af2d-809ec2e928ed
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