"Kant believed that there was a science only in so far as there was mathematics. The same error can be encountered among many mathematicians and physicists who believe that they alone possess exactness. However, they possess it only within their field. There is exactness also in the movements of animals and in the emotions and passions of man. Homeric hexameter or a Pindaric ode has as much exactness as any causal relation or mathematical formula. But this rhythmic, metrical exactness is of another, higher order. That it cannot be calculated is no reason to call it less exact than the results of this or that quantitative measurement."