As on a voyage when the vessel has reached a port, if you go out to get
water it is an amusement by the way to pick up a shellfish or some
bulb, but your thoughts ought to be directed to the ship, and you ought
to be constantly watching if the captain should call, and then you must
throw away all those things, that you may not be bound and pitched into
the ship like sheep. So in life also, if there be given to you instead
of a little bulb and a shell a wife and child, there will be nothing to
prevent (you from taking them). But if the captain should call, run to
the ship and leave all those things without regard to them. But if you
are old, do not even go far from the ship, lest when you are called you
make default.