In page 52, after enumerating the wonderful productions of the hand, an objection was foreseen, which may be conveniently examined in the present chapter. That all the performances of the human hand, and of the other members of the body, which are not the result of involuntary movements, must have been the consequence of the direction of the will, is indisputable: it is, in fact, the common relation of cause and effect: but the creation of this distinction, would assign separate offices to the mind and to the organ;--or to the power directing, and to the instrument by which the command is executed. Sufficient has been already adduced, to render it obvious, that mind or organ _alone_ would be inadequate for the purposes of intelligence. Perception, without its record or memory, would be a useless endowment; muscles or organs of motion, without a power to direct their actions, could have answered no purpose: to be effective, volition must have an object on which its influence can be exerted. In the case of a paralytic arm or leg, the exercise of the will is a fruitless endeavour; and the command to render fixed a tremulous hand is equally unavailing. The power or capacity of moving the muscles,--of directing the organs of sense to the examination of objects,--of recollecting,--and of regulating our thoughts or reflections, constitutes the will; but this acquirement is of very gradual formation, and the result of mutual and progressive exercise, both of mind and organ. Ordinary persons have no information of the structure by which they perform their motions; and it may be also doubted if an able anatomist would be competent to describe the action of the different muscles, in complicated movements. The most dexterous artificer, is wholly ignorant of the intimate construction of the organs by which he performs his wonderful elaborations,--he has acquired the happy facility by repeated exercise. There is a tacit and practical convention between his mind and the powers which produce the performance; tacit, as he is unable to describe them, and practical, as, if naturally left-handed, he is unable by any mental directions or influence of volition, to exhibit the same performance with the right. The apparent facility and astonishing rapidity with which, by practice, we perform many of our voluntary motions, has induced an opinion, that such motions might be considered as automatical, which implies that they were performed by the organ independently of the will; but this would be to maintain, that the most difficult and felicitous of our voluntary motions were themselves involuntary. This supposition is so absurd that it refutes itself; its admission would be a libel on the perfection of human attainment, and tend to subvert the best portion of our existing morality.