“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 astrophysicist Space, Time and Gravitation (1920) Law , Learning , Perfection , Truth
“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) mathematician Foreword to Teichmüller Theory Mathematics , Sense
