Diog. Laert. II. v.; VI. i.

Soc. What say you, Antisthenes?--have friends their values like
domestic slaves? One of these latter may be worth perhaps two
minae,[2] another only half a mina, a third five, and a fourth as much
as ten; while they do say that Nicias,[3] the son of Niceratus, paid a
whole talent for a superintendent of his silver mines. And so I
propound the question to myself as follows: "Have friends, like
slaves, their market values?"

[2] A mina = L4 circ.

[3] For Nicias see Thuc. vii. 77 foll.; "Revenues," iv. 14; Plut.
"Nic." IV. v.; Lys. "de bon. Aristoph." 648.

Not a doubt of it (replied Antisthenes). At any rate, I know that I
would rather have such a one as my friend than be paid two minae, and
there is such another whose worth I would not estimate at half a mina,
and a third with whom I would not part for ten, and then again a
fourth whose friendship would be cheap if it cost me all the wealth
and pains in the world to purchase it.

Well then (continued Socrates), if that be so, would it not be well if
every one were to examine himself: "What after all may I chance to be
worth to my friends?" Should he not try to become as dear as possible,
so that his friends will not care to give him up? How often do I hear
the complaint: "My friend So-and-so has given me up"; or "Such an one,
whom I looked upon as a friend, has sacrificed me for a mina." And
every time I hear these remarks, the question arises in my mind: If
the vendor of a worthless slave is ready to part with him to a