Similar circumstances produce the same unvariable effects. The precise character and motives of any man on any occasion being given, the moral philosopher could predict his actions with as much certainty as the natural philosopher could predict the effects of the mixture of any particular chemical substances. Why is the aged husbandman more experienced than the young beginner? Because there is an uniform, undeniable necessity in the operations of the material universe. Why is the old statesman more skilful than the raw politician? Because, relying on the necessary conjunction of motive and action, he proceeds to produce moral effects, by the application of those moral causes which experience has shewn to be effectual. Some actions may be found to which we can attach no motives, but these are the effects of causes with which we are unacquainted. Hence the relation which motive bears to voluntary action is that of cause to effect; nor, placed in this point of view, is it, or ever has it been the subject of popular or philosophical dispute. None but the few fanatics who are engaged in the Herculean task of reconciling the justice of their God with the misery of man, will longer outrage common sense by the supposition of an event without a cause, a voluntary action without a motive. History, politics, morals, criticism, all grounds of reasoning, all principles of science, alike assume the truth of the doctrine of Necessity. No farmer carrying his corn to market doubts the sale of it at the market price. The master of a manufactory no more doubts that he can purchase the human labour necessary for his pur-
