The emperor's moral philosophy was not a feeble, narrow system, which teaches a man to look directly to his own happiness, though a man's happiness or tranquillity is indirectly promoted by living as he ought to do. A man must live conformably to the universal nature, which means, as the emperor explains it in many passages, that a man's actions must be conformable to his true relations to all other human beings, both as a citizen of a political community and as a member of the whole human family. This implies, and he often expresses it in the most forcible language, that a man's words and actions, so far as they affect others, must be measured by a fixed rule, which is their consistency with the conservation and the interests of the particular society of which he is a member, and of the whole human race. To live conformably to such a rule, a man must use his rational faculties in order to discern clearly the consequences and full effect of all his actions and of the actions of others: he must not live a life of contemplation and reflection only, though he must often retire within himself to calm and purify his soul by thought,[A] but he must mingle in the work of man and be a fellow laborer for the general good. [A] Ut nemo in sese tentat descendere, nemo.--_Persius_, iv. 21. A man should have an object or purpose in life, that he may direct all his energies to it; of course a good object (ii. 7). He who has not one object or purpose of life, cannot be one and the same all through his life (xi. 21). Bacon has a remark to the same effect, on the best means of "reducing of the mind unto virtue and good estate; which is, the electing and propounding unto a man's self good and virtuous ends of his life, such as may be in a reasonable sort within his compass to attain." He is a happy man who has been wise enough to do this when he was young and has had the opportunities; but the emperor seeing well that a man cannot always be so wise in his youth, encourages himself to do it when he can, and not to let life slip away before he has begun. He who can propose to himself good and virtuous ends of life, and be true to them, cannot fail to live conformably to his own interest and the universal interest, for in the nature of things they are one. If a thing is not good for the hive, it is not good for the bee (vi. 54).