Cornelius Nepos wrote this about Phocion:

Phocion, having arrived in good health at the eightieth year, at the end of his life he accumulated a great hatred on the part of his citizens, in particular because he had agreed with Demades about the assignment of the city to Antipater, and with his council Demosthenes along with others, who were judged deserving for the good of the republic, had been sent into exile by order of the people. Moreover, he had not only offended him, because he had deliberated negatively towards his country, but also because he had not kept the friendship pact. And in fact, enriched and facilitated by Demosthenes, he had risen his rank, which he held (previously), instigating him against Carete: in judgments, speaking of capital punishment, those times that had been defended by him (Demosthenes), if he had gone away free. Not only did he not defend him from convictions, but he also betrayed him.

Original latin text:

Phocion cum prope ad annum octogesimum prospera pervenisset fortuna, extremis temporibus magnum in odium pervenit suorum civium, primo quod cum Demade de urbe tradenda Antipatro consenserat eiusque consilio Demosthenes cum ceteris, qui bene de re publica meriti existimabantur, populi scito in exilium erant expulsi. Neque in eo solum offenderat, quod patriae male consuluerat, sed etiam quod amicitiae fidem non praestiterat. Namque auctus adiutusque a Demosthene eum gradum, quem tenebat, ascenderat, cum adversus Charetem eum subornaret : ab eodem in iudiciis, cum capitis causam diceret, defensus aliquotiens, liberatus discesserat. Hunc non solum in periculis non defendit, sed etiam prodidit.