We need not be misled by the title, “On the Genius (Sign, Daemon) of Socrates”; maybe a third of it discusses in what his guardian voice might have consisted, and it is embedded in a typically Greek matrix of (1) moral concerns, (2) mysticism, and (3) murder — this last, the Theban uprising of 379 BC, forming the unlikely setting and in fact the main topic: after a spirited discussion of Buddhist reincarnation, virtue and the paths of the planets thru the Milky Way, the philosophers run off to assassinate the heads of their government.
Samples of (1), (2), and (3), in order:
For if it is a noble act to benefit friends, it is no disgrace to be benefited by them; for the favour, requiring a recipient no less than a giver, needs both to be made perfect in nobility. He who refuses to accept the favour, like the man who refuses to catch a well-directed ball, disgraces it, allowing it to fall to the ground without achieving its end. For what target is so delightful to hit and so painful to miss, as a man deserving kindness at whom we aim a favour? Yet in the case of the target the man who misses has only himself to blame, as the mark is fixed; whereas with favours, the man who declines and moves aside is guilty of an offence against the favour, allowing it to fall short of its goal.
Some of it was of the pure hue of the high seas, while elsewhere the colour was not unmixed, but turbid and like that of a pool. As they crested the surge the islands came back, without, however, returning to their point of departure or completing a circle; but with each new circuit they advanced slightly beyond the old, describing a single spiral in their revolution. The sea containing these was inclined at an angle of somewhat less than eight parts of the whole toward the midmost and largest portion of the surrounding envelope, as he made out; and it had two openings receiving rivers of fire emptying into it across from one another, so that it was forced far back, boiling, and its blue colour was turned to white. All this he viewed with enjoyment of the spectacle. But looking down he saw a great abyss, round, as though a sphere had been cut away; most terrible and deep it was, and filled with a mass of darkness that did not remain at rest, but was agitated and often welled up. From it could be heard innumerable roars and groans of animals, the wailing of innumerable babes, the mingled lamentations of men and women ….
[W]hen Melon, the first to make a move, set out through their midst, his hand on his sword hilt, Cabirichus, the magistrate appointed by lot, caught his arm as he passed and shouted: “Isn’t this Melon, Phyllidas?” Melon, however, disengaged himself, drawing his sword as he did so, and rushing at Archias, who was having trouble getting to his feet, did not slacken his blows until he had killed him. Philippus was wounded by Charon near the neck, and as he defended himself with the goblets set before him, Lysitheüs threw him from his couch to the ground and dispatched him. We endeavoured to quiet Cabirichus, adjuring him not to lend aid to the tyrants but help us set his country free, as his person was sacred and consecrated to the gods in that country’s behalf. But as he was not easily to be won over to the wiser course by an appeal to reason, the wine also having its effect, but was getting to his feet, excited and confused, and couching the spear our magistrates are accustomed to keep always with them, I seized it in the middle and raising it above my head shouted to him to let go and save himself, as he would otherwise be cut down; but Theopompus came up at his right and struck him with his sword, saying: “Lie there with these you toadied to: may you never wear the chaplet when Thebes is free and never sacrifice again to the gods before whom you have invoked so many curses on your country in your many prayers for her enemies.” When Cabirichus had fallen, Theocritus (who was standing near) caught up the sacred spear from the blood, while we dispatched the few servants who had ventured to fight back and locked up the rest ….
There’s still a lot of Plutarch left: right now, only 45% of the Moralia are onsite.