A further conclusion may be drawn. Besides the implication that before altruistic pleasure can exist, egoistic pleasure must exist, and that if the rule of conduct is to be the same for all, each must be egoistic in due degree; there is the implication that, to achieve the greatest sum of happiness, each must be more egoistic than altruistic. For, speaking generally, sympathetic pleasures must ever continue less intense than the pleasures with which there is sympathy. Other things equal, ideal feelings cannot be as vivid as real feelings. It is true that those having strong imaginations may, especially in cases where the affections are engaged, feel the moral pain if not the physical pain of another, as keenly as the actual sufferer of it, and may participate with like intensity in another's pleasure; sometimes even mentally representing the received pleasure as greater than it really is, and so getting reflex pleasure greater than the recipients' direct pleasure. Such cases, however, and cases in which even apart from exultation of sympathy caused by attachment, there is a body of feeling sympathetically aroused equal in amount to the original feeling, if not greater, are necessarily exceptional. For in such cases the total consciousness includes many other elements besides the mentally-represented pleasure or pain--notably the luxury of pity and the luxury of goodness; and genesis of these can occur but occasionally; they could not be habitual concomitants of sympathetic pleasures if all pursued these from moment to moment. In estimating the possible totality of sympathetic pleasures, we must include nothing beyond the representations of the pleasures others experience. And unless it be asserted that we can have other's states of consciousness perpetually reproduced in us more vividly than the kindred states of consciousness are aroused in ourselves by their proper personal causes, it must be admitted that the totality of altruistic pleasures cannot become equal to the totality of egoistic pleasures. Hence, beyond the truth that before there can be altruistic pleasures there must be the egoistic pleasures from sympathy with which they arise, there is the truth that to obtain the greatest sum of altruistic pleasures, there must be a greater sum of egoistic pleasures. § 87. That pure altruism is suicidal may be yet otherwise demonstrated. A perfectly moral law must be one which becomes perfectly practicable as human nature becomes perfect. If its practicableness decreases as human nature improves; and if an ideal human nature necessitates its impracticability, it cannot be the moral law sought.