50 BC, Marcus Tullius Cicero (author), Louis Claude Purser (editor), “Scr. Laudiceae post iii Id. Febi; a. 704 (50). CICERO IMR PAETO.” in Epistulae ad Familiares (1952), book IX, letter xxv, § 2:
Cum M. Fadio, quod scire te arbitror, mihi summus usus est valdeque eum diligo cum propter summam probitatem eius ac singularem modestiam, tum quod in iis controversiis, quas habeo cum tuis combibonibus Epicuriis, optima opera eius uti soleo.
With M. Fadius, as I think you know, I am very intimate, and I am much attached to him, as well from his extreme honesty and singular modesty of behaviour, as from the fact that I am accustomed to find him of the greatest help in the controversies which I have with your fellow tipplers the Epicureans. ― translation from: Evelyn Shirley Shuckburgh, The Letters of Cicero; the whole extant correspondence in chronological order, in four volumes (1889–1900), volume II, letter ccxlv (F IX, 25): “To L. Papinius Peatus (at Rome); Laodicea (February)”