Remember these nine precepts as gifts received from the Muses; and begin now to be human for the rest of your life. Beware equally of being angry with men and of flattering them. Both are unsocial and lead to mischief. In all anger recollect that wrath is not becoming to a man; but that meekness and gentleness, as they are more human, are also more manly. Strength and nerves and courage are the portion of the meek and gentle man; and not of the irascible and impatient. For the nearer a man attains to freedom from passion, the nearer he comes to strength. A weak man in grief is like a weak man in anger. Both are hurt, and both give way.
If you want a tenth gift, from the Leader of the Muses, take this:-- To expect the wicked not to sin is madness. It is to expect an impossibility. But to allow them to injure others, and to forbid them to injure you, is foolish and tyrannical.
19. There are four states of the soul against which you must continually and especially be upon your guard; and which, when detected, should be effaced, by remarking thus of each. "This thought is unnecessary. This tends to social dissolution. You could not say this from your heart; and to speak otherwise than from the heart you must regard as the most absurd conduct." And, fourthly, whatever causes self-reproach is an overpowering or subjection of the diviner part within you to the less honourable and mortal part, the body, and to its grosser tendencies.
20. The serial and igneous parts of which you are compounded, although they naturally tend upwards, nevertheless obey the general law of the Universe, and are retained here in composition. The earthy and humid parts of you, though they naturally tend downwards, are nevertheless supported and remain where they are, although not in their natural situation. Thus the elements, wheresoever placed by the superior power, obey the whole; waiting till the signal shall sound again for their dissolution. Is it not grievous that the intellectual part alone should be disobedient, and fret at its function? Yet is no violence done to it, nothing imposed contrary to its nature. Still it is impatient, and tends to opposition. For all its tendencies towards injustice, debauchery, wrath, sorrows, and fears are so many departures from Nature. And, when the soul frets at any particular event, it is deserting its appointed station. It is formed for holiness and piety toward God, no less than for justice. These last are branches of social goodness even more venerable than the practice of justice.