A quotation by Emil Artin


This skipping is another important point. It should be done whenever a proof seems too hard or whenever a theorem or a whole paragraph does not appeal to the reader. In most cases he will be able to go on and later he may return to the parts which he skipped.
Quoted in G E Martin, The Foundations of Geometry and the Non-Euclidean Plane (1982)


JOC/EFR December 2013

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