If the rules of mathematics are rules of grammar, there is no stupidity involved when we fail to see that a mathematical truth is obvious.
Mathematics for the Millions, Chapter I (p. 32), W.W. Norton & Company, Inc. 1917
If the rules of mathematics are rules of grammar, there is no stupidity involved when we fail to see that a mathematical truth is obvious.
Mathematics for the Millions, Chapter I (p. 32), W.W. Norton & Company, Inc. 1917