"If we have been accustomed to deplore the spectacle, among the artisan class, of a workman occupied during his whole life in nothing but making knife handles or pinheads, we may find something quite as lamentable in the intellectual class, in the exclusive employment of the human brain in resolving equations or classifying insects. The moral effect is, unhappily, analogous in the two cases. It occasions a miserable indifference about the general course of human affairs."