Plutarch, De genio Socratis
Goodwin, Ed.

Be it so, rejoined Theocritus, but what shall we think of his Daemon? Was it a mere juggle? Indeed, nothing that is told of Pythagoras regarding divination seems to me so great and divine. For, in my mind, as Homer makes Minerva to stand by Ulysses in all dangers. so the Daemon joined to Socrates even from his cradle some vision to guide him in all the actions of his life; which going before him, shed a light upon hidden and obscure matters and such as could not be discovered by unassisted human understanding; of such things the Daemon often discoursed with him, presiding over and by divine instinct directing his intentions. More and greater things perhaps you may learn from Simmias and other companions of Socrates; but once when I was present, as I went to Euthyphron the soothsayer's, it happened, Simmias,—for you remember it,—that Socrates walked up to Symbolum and the house of Andocides, all the way asking questions and jocosely perplexing Euthyphron. When standing still upon a sudden and persuading us to do the like, he mused a pretty while, and then turning about walked through Trunk-makers' Street, calling back his friends that walked before him, affirming that it was his Daemon's will and admonition. Many turned back, amongst whom I, holding Euthyphron, was one; but some of the youths keeping on the straight way, on purpose (as it were) to confute Socrates's Daemon, took along with them Charillus the piper, who came in my company to Athens to see Cebes. Now as they were walking through Gravers' Row, [p. 389] near the court-houses, a herd of dirty swine met them; and being too many for the street and running against one another, they overthrew some that could not get out of the way, and dirted others; and Charillus came home with his legs and clothes very dirty; so that now and then in merriment they would think on Socrates's Daemon, wondering that it never forsook the man, and that Heaven took such particular care of him.