Plutarch Phocion 24

[1] But Leosthenes was killed, and then those who feared that Phocion, if he were sent out as general, would put a stop to the war, arranged with a certain obscure person to rise in the assembly and say that he was a friend and intimate associate of Phocion, and therefore advised the people to spare him and keep him in reserve, since they had none other like him, and to send out Antiphilus to the army. This course was approved by the Athenians, whereupon Phocion came forward and said that he had never been intimately associated with the person, nor in any way familiar or acquainted with him;

[2] But now, said he, from this very day I make thee a friend and close companion, for thou hast counselled what was for my advantage.
  Again, when the Athenians were bent on making an expedition against the Boeotians, at first he opposed it; and when his friends told him that he would be put to death by the Athenians if he offended them, That will be unjust, said he, if I act for their advantage; but if I play them false, it will be just.

[3] Afterwards, however, seeing that they would not desist, but continued their clamour, he ordered the herald to make proclamation that every man in Athens under sixty years of age should take provisions for five days and follow him at once from the assembly. Thereupon a great tumult arose, the elderly men leaping to their feet and shouting their dissent. It is no hardship, said Phocion, for I who am to be your general am in my eightieth year. For the time being this checked them and changed their purpose.