Moreover, the measures which he took in the case of Antiphon were exceedingly aristocratic in their spirit. Antiphon had been acquitted by the assembly, but Demosthenes arrested him and brought him before the council of the Areiopagus, and making no account of the offence thus given to the people, convicted him of having promised Philip to set fire to the dockyards; and Antiphon was given up to justice by the council and suffered death.
Edition :
Plutarch Lives VII: Demosthenes and Cicero, Alexander and Caesar, Ed. Jeffrey Henderson, trans. Bernadotte Perrin (The Loeb Classical Library 99), Harvard University Press: Cambridge/MA - London 1967 (first ed. 1919).