Seneca · On the futility of learning maxims
Letters 33.4
Suppose we should desire to sort out each separate motto from the general stock; to whom shall we credit them? To Zeno, Cleanthes, Chrysippus, Panaetius, or Posidonius? We Stoics are not subjects of a despot: each of us lays claim to his own freedom. With them, on the other hand, whatever Hermarchus says, or Metrodorus, is ascribed to one source. In that brotherhood, everything that any man utters is spoken under the leadership and commanding authority of one alone. We cannot, I maintain, no matter how we try, pick out anything from so great a multitude of things equally good.
Only the poor man counts his flock.
Wherever you direct your gaze, you will meet with something that might stand out from the rest, if the context in which you read it were not equally notable.
Seneca, Letters to Lucilius 33.4, translated by Richard Mott Gummere