What is evil to thee does not subsist in the ruling principle of another; nor yet in any turning and mutation of thy corporeal covering. Where is it then? It is in that part of thee in which subsists the power of forming opinions about evils. Let this power then not form such opinions, and all is well. And if that which is nearest to it, the poor body, is burnt, filled with matter and rottenness, nevertheless let the part which forms opinions about these things be quiet, that is, let it judge that nothing is either bad or good which can happen equally to the bad man and the good. For that which happens equally to him who lives contrary to nature and to him who lives according to nature, is neither according to nature nor contrary to nature.
Constantly observe who those are whose approbation thou wishest to have, and what ruling principles they possess. For then thou wilt neither blame those who offend involuntarily, nor wilt thou want their approbation, if thou lookest to the sources of their opinions and appetites.
Whatever man thou meetest with, immediately say to thyself: What opinions has this man about good and bad? For if with respect to pleasure and pain and the causes of each, and with respect to fame and ignominy, death and life, he has such and such opinions, it will seem nothing wonderful or strange to me, if he does such and such things; and I shall bear in mind that he is compelled to do so.
To-day I have got out of all trouble, or rather I have cast out all trouble, for it was not outside, but within and in my opinions.
The universal cause is like a winter torrent: it carries everything along with it. But how worthless are all these poor people who are engaged in matters political, and, as they suppose, are playing the philosopher! All drivellers. Well then, man: do what nature now requires. Set thyself in motion, if it is in thy power, and do not look about thee to see if any one will observe it; nor yet expect Plato's Republic: but be content if the smallest thing goes on well, and consider such an event to be no small matter. For who can change men's opinions? And without a change of opinions what else is there than the slavery of men who groan while they pretend to obey? Come now and tell me of Alexander and Philip and Demetrius of Phalerum. They themselves shall judge whether they discovered what the common nature required, and trained themselves accordingly. But if they acted like tragedy heroes, no one has condemned me to imitate them. Simple and modest is the work of philosophy. Draw me not aside to indolence and pride.
A spider is proud when it has caught a fly, and another when he has caught a poor hare, and another when he has taken a little fish in a net, and another when he has taken wild boars, and another when he has taken bears, and another when he has taken Sarmatians. Are not these robbers, if thou examinest their opinions?