“A non-mathematical presentation has necessary limitations; and the reader who wishes to learn how certain exact results follow from Einstein's, or even Newton's, law of gravitation is bound to seek the reasons in a mathematical treatise. ...[T]he geometry of relativity in its perfect harmony expresses a truth... which my bowdlerised version misses.But the mind is not content to leave scientific Truth in a dry husk of mathematical symbols, and demands that it shall be alloyed with familiar images.”Arthur Stanley Eddington (1882–1944) British astrophysicistSpace, Time and Gravitation (1920)Truth, Law, Mathematics, Learning
“The term `geometry'...refers to a pattern of processing within our brains related to our spatial and visual senses, more than it refers to a separate content area of mathematics.”William Thurston (1946–2012) mathematicianForeword to Teichmüller TheoryMathematics, Sense