Sense is somewhat disposed to complain of the mis-direction of valuable effort; so that the meed of honour commonly paid to Science seems to be graduated, though perhaps unconsciously, by a tolerably exact utilitarian scale. Certainly the moment the legitimacy of any branch of scientific inquiry is seriously disputed, as in the recent case of vivisection, the controversy on both sides is generally conducted on an avowedly utilitarian basis.
"The case of Virtue requires special consideration: since the encouragement in each other of virtuous impulses and dispositions is a main aim of men's ordinary moral discourse; so that even to raise the question whether this encouragement can go too far has a paradoxical air. Still, our experience includes rare and exceptional cases in which the concentration of effort on the cultivation of virtue has seemed to have effects adverse to general happiness, through being intensified to the point of moral fanaticism, and so involving a neglect of other conditions of happiness. If, then, we admit as actual or possible such 'infelicific' effects of the cultivation of Virtue, I think we shall also generally admit that, in the case supposed, conduciveness to general happiness should be the criterion for deciding how far the cultivation of Virtue should be carried."
There we have Prof. Sidgwick's argument completed. We ought not, he thinks, to aim at knowing the Truth, or at contemplating Beauty, except in so far as such knowledge or such contemplation contributes to increase the pleasure or to diminish the pain of sentient beings. Pleasure alone is good for its own sake: knowledge of the Truth is good only as a means to pleasure.
52. Let us consider what this means. What is pleasure? It is certainly something of which we may be conscious, and which, therefore, may be distinguished from our consciousness of it. What I wish first to ask is this: Can it really be said that we value pleasure, except in so far as we are conscious of it? Should we think that the attainment of pleasure, of which we never were and never could be conscious, was something to be aimed at for its own sake? It may be impossible that such pleasure should ever exist, that it should ever be thus
