Seneca, Moral Epistle 39.1.-2
“I will prepare the notes you ask for, carefully ordered and effectively brief. But think about whether the regular way of doing things is better than this thing now called the abstract, which once in Latin was called a ‘summary’. A longer course is required for someone who is learned while the other is for someone who knows. I will give you plenty of both. You should not ask me for this idea or for that. Whoever provides a stand-in remains unknown.
I will write what you want, but I’ll do it my way. In the meantime, you have many authors whose writings provide enough direction. Take into your hand a list of philosophers. This act itself will wake you up, once you see how many have worked hard for you. You will want to become one of these yourself. For the noble soul exhibits this best quality in its self: it can be incited to purse admirable things.”
Commentarios, quos desideras, diligenter ordinatos et in angustum coactos ego vero conponam. Sed vide, ne plus profutura sit ratio ordinaria quam haec, quae nunc vulgo breviarium dicitur, olim cum latine loqueremur, summarium vocabatur. Illa res discenti magis necessaria est, haec scienti. Illa enim docet, haec admonet. Sed utriusque rei tibi copiam faciam. Tu a me non est quod illum aut illum exigas; qui notorem dat, ignotus est. Scribam ergo quod vis,
sed meo more; interim multos habes, quorum scripta nescio an satis ordinent. Sume in manus indicem philosophorum; haec ipsa res expergisci te coget, si videris, quam multi tibi laboraverint. Concupisces et ipse ex illis unus esse. Habet enim hoc optimum in se generosus animus, quod concitatur ad honesta.