Letters 83.10

Posidonius pleads the cause of our master Zeno in the only possible way; but it cannot, I hold, be pleaded even in this way. For Posidonius maintains that the word “drunken” is used in two ways,—in the one case of a man who is loaded with wine and has no control over himself; in the other, of a man who is accustomed to get drunk, and is a slave to the habit. Zeno, he says, meant the latter,—the man who is accustomed to get drunk, not the man who is drunk; and no one would entrust to this person any secret, for it might be blabbed out when the man was in his cups.

Seneca, Letters to Lucilius 83.10, translated by Richard Mott Gummere