Indeed, the ethical interest and value of the theory appears to me to lie in its very one-sidedness. It tends to correct a vulgar error in the estimate of pleasure, by directing attention strongly to the importance of a class of pleasures which ordinary pleasure-seeking probably undervalues,--the pleasures that specially belong to a life filled with strenuous activity, whether purely intellectual, or practical and partly physical.[136] In the same way it effectively dispels the popular inadvertence of regarding labour as normally painful because some labour is so, and because the pleasures connected with relief from toil--the pleasures of repose and play--are in the experience of most persons more striking than the pleasures of strenuous activity. At the same time, even if we limit the theory to the pleasures and pains immediately connected with voluntary activity--intellectual or physical--it seems to me devoid not only of definite guidance, but also of adequate theoretical precision. For it seems to imply that the exercise of our powers is always made less pleasant by the presence of impediments; but this is obviously not true either of mainly intellectual or mainly physical activities. Some obstacles undeniably increase pleasure by drawing out force and skill to overcome them, as is clearly shown in the case of games and sports: and even if we understand pain-causing impediments to be only such hindrances as repress and diminish action, I do not find that the theory is supported by experience, except so far as the repression causes the specific discomfort of unsatisfied desire. _E.g._ I find entertainment rather than discomfort in trying to make out objects in a dim light, or the meaning of a speech in a strange language, provided that failure does not interfere with the attainment of any end to which I attach importance. It is a fundamental defect in Hamilton’s theory, even in its more limited application, that it ignores the teleological character of normal human activity.
This defect is avoided in a modification of the theory that a recent writer has adopted. “The antithesis,” says Mr. Stout,[137] “between pleasure and pain is coincident with the antithesis between free and impeded progress towards an end. Unimpeded progress is pleasant in proportion to the intensity and complexity of mental excitement. An activity which is ... thwarted and retarded ... is painful in proportion to its intensity and complexity and to the degree of the hindrance.” Mr. Stout admits the difficulty of applying this principle of explanation to the pleasures and pains of sense:[138] and--unlike Hamilton--he expressly recognises that “a struggle with difficulties which is not too prolonged or too intense may enhance the pleasure of success out of all proportion to its own painfulness.” But this qualification seems to render the propositions first laid down unimportant from our present practical point of view, whatever may be their theoretical value. I think, too, that the importance of antecedent desire, as a condition of the pleasures and pains attendant on voluntary activities, should be more expressly recognised. When desire is strong, hopeful effort to overcome difficulties in the way of fruition tends to be proportionally pleasurable--apart from actual success--while disappointment or the fear of disappointment similarly tends to be painful: but when desire is not strong, the shock of thwarted activity and unfulfilled expectation may be rather agreeable than otherwise. Thus, suppose I take a walk for pleasure, intending to reach a neighbouring village, and find an unexpected flood crossing my road; if I have no strong motive for arriving at the village, the surprise and consequent change in the plan of my walk will probably be on the whole a pleasurable incident.