Fragments 507-508 of Lucilius in the Loeb edition, with Shadi Bartsch’s translation from the introduction to her Persius: A Study in Food, Philosophy, and the Figural.  

Paenula, si quaeris, cantherius, servus, segestre utilior mihi quam sapiens

If you’re asking: a cloak, an old nag, a slave, a wrapper are all more useful to me than a philosopher

It also now reads like a position description discouraging anyone tainted by the humanities from applying.