``Metric truths are measures, human conceptions, stripped bare by reason,''``Our bodies require a positive relation with the natural world, and measuring the world with and through our bodies is essential to civilized human existence.'' Robert Tavernor, Smoot's Ear.

Man is the measure of all things, of the existence of things that are, and the non existence of things that are not. Protagoras c490 - c420 BC