3. Another principle, also elementary, and passed into an axiom by force of truth, is that all intelligent effect must have an intelligent cause.
If one inquired who was the inventor of such an ingenious piece of mechanism, the architect of such a monument, the sculptor of such a statue, or the painter of such a picture, what would one think of him who should reply that it was done without the help of anyone? When one sees a superior work of art or of industry, they say that that is probably the work of a man of genius, because it is evident that a high intelligence has presided at its conception. One judges, nevertheless, that a man has done it, because one knows that it is not above human capacity; but no one will say that it proceeded from the brain of an idiot or of an ignorant, and still less that it is the work of an animal, or the product of chance.