When the Sidonian sophist
 Otherwise unknown. 
was once showing.
his powers at Athens, and was voicing his own
praise to the effect that he was acquainted with all
philosophy—but I may as well cite his very words:
“If Aristotle calls me to the Lyceum, I shall go
with him; if Plato calls me to the Academy, I shall
come; if Zeno calls, I shall spend my time in the
Stoa; if Pythagoras calls, I shall hold my tongue.”
 Alluding to the Pythagorean vow of silence. 
Well, Demonax arose in the midst of the audience
and said: “Ho” (addressing him by name), “Pythagoras is calling you!”