The Problem of the a Priori

We are fully aware of the unbridgeable gulf separating our reason from the reactive processes of their brains and nerves. But at the same time, we divine that forces are desperately struggling in them toward the light of comprehension. The fundamental logical relations are not subject to proof or disproof. Every attempt to prove them must presuppose their validity. It is impossible to explain them to a being who would not possess them on his own count. Efforts to define them according to the rules of definition must fail. They are primary propositions antecedent to any nominal or real definition. They are ultimate, unanalyzable categories. No matter how they may pear to superhuman beings,. for man inescap