Moral Letters to Lucilius Section 4

Sed videlicet ratio isti rei praeposita est; illa quemadmodum de beata vita, quemadmodum de virtute, de honesto, sic et de bono maloque constituit. Nam apud istos vilissimae parti datur de meliore sententia, ut de bono pronuntiet sensus, obtunsa res et hebes et in homine quam in aliis animalibus tardior.

Mais évidemment, c’est à la raison, souveraine des sens, qu’appartient le droit de régler la vie et ce qui est vertu, honneur, et de prononcer sur le bien et le mal. Chez nos adversaires la partie la plus vile a droit de décision sur la plus noble : ce qui est bien, les sens le détermineront, les sens, obtus et grossiers, moins prompts chez l’homme que chez les animaux.

Reason, however, is surely the governing element in such a matter as this; as reason has made the decision concerning the happy life, and concerning virtue and honour also, so she has made the decision with regard to good and evil. For with them the vilest part is allowed to give sentence about the better, so that the senses - dense as they are, and dull, and even more sluggish in man than in the other animals, - pass judgment on the Good.