No More Learning

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(16) But note, again, how well he could use the same art which he
reprehended to serve his own humour: when bearing a secret grudge to
Callisthenes, because he was against the new ceremony of his adoration,
feasting one night where the same Callisthenes was at the table, it was
moved by some after supper, for entertainment sake, that Callisthenes,
who was an eloquent man, might speak of some theme or purpose at his own
choice; which Callisthenes did, choosing the praise of the Macedonian
nation for his discourse, and performing the same with so good manner as
the hearers were much ravished; whereupon Alexander, nothing pleased,
said, “It was easy to be eloquent upon so good a subject; but,” saith he,
“turn your style, and let us hear what you can say against us;” which
Callisthenes           undertook, and did with that sting and life that
Alexander interrupted him, and said, “The goodness of the cause made him
eloquent before, and despite made him eloquent then again.