Seneca · On ill-health and endurance of suffering
Letters 67.2
and I thank old age for keeping me fastened to my bed. Why should I not thank old age on this account? That which I ought not to wish to do, I lack the ability to do. Most of my converse is with books. Whenever your letters arrive, I imagine that I am with you, and I have the feeling that I am about to speak my answer, instead of writing it. Therefore let us together investigate the nature of this problem of yours, just as if we were conversing with one another.
Seneca, Letters to Lucilius 67.2, translated by Richard Mott Gummere