Moral Letters to Lucilius Section 25

Quid ista, inquis, mihi subtilitas proderit? Si me interrogas, nihil. Sed quemadmodum ille caelator oculos diu intentos ac fatigatos remittit atque avocat et, ut dici solet, pascit; sic nos animum aliquando debemus relaxare et quibusdam oblectamentis reficere. Sed ipsa oblectamenta opera sint. Ex his quoque, si observaveris, sumes, quod possit fieri salutare.

« À quoi, diras-tu, ces subtilités me serviront-elles ? » Puisque tu le demandes, à rien. Mais de même que le ciseleur donne à ses yeux fatigués par une trop longue tension quelque distraction et quelque relâche et, comme on dit, les restaure, ainsi parfois devons-nous détendre notre esprit et le refaire par certains délassements. Mais que ces délassements soient aussi des exercices : tu tireras même de là, si tu le veux bien, quelque chose de salutaire.

“Very well,” say you, “what good shall I get from all this fine reasoning?” None, if you wish me to answer your question. Nevertheless, just as an engraver rests his eyes when they have long been under a strain and are weary, and calls them from their work, and “feasts” them, as the saying is; so we at times should slacken our minds and refresh them with some sort of entertainment. But let even your entertainment be work; and even from these various forms of entertainment you will select, if you have been watchful, something that may prove wholesome.