Mathematics is as much an aspect of culture as it is a collection of algorithms. – Carl Boyer, 1949, calculus textbook

Although I am almost illiterate mathematically, I grasped very early in life that any one who can count to ten can count upward indefinitely if he is fool enough to do so. – Robertson Davies, "Of the Conservation of Youth," The Table Talk of Samu

Nature does not count nor do integers occur in nature. Man made them all, integers and all the rest, Kronecker to the contrary notwithstanding. – Percy William Bridgman, The Way Things Are