Letter 56 opens with Seneca in a rented room directly above a public bathhouse, and rather than complain, he catalogs the noise with evident relish. There's the weightlifter's theatrical groaning — which he suspects is performed, because real effort, he notes, doesn't make that much sound. There's the slap of the masseur's hand on flesh, varying in pitch depending on the stroke. There's the man who loves to hear himself sing in the water. There's a ball game in the courtyard. There's a vendor hawking food. Underneath everything, the constant din of Rome at its most ordinary. It's one of the most alive passages in all the letters — first-century street noise caught and held still.
Then the turn. He's fine with all of it. "I force my mind to become self-absorbed and not let outside things distract it." The racket doesn't penetrate — not because he's straining to block it out, but because his attention is genuinely elsewhere, in some interior room that the bathhouse below simply can't reach. Noise, he suggests, only swamps you when you were already directionless. The din reveals the state you were already in.
"Undoubtedly the body needs to be hardened and so does the mind. When the body suffers much it gets accustomed to suffering. The mind must be trained similarly."
This idea connects to a thread running through several of the letters. In Letter 28, Seneca tells Lucilius that travel won't fix a restless mind — if you're scattered in Rome, you'll be scattered in Greece, because you are the common factor. The problem was never the place. And in Letter 55, he visits the country villa of a man named Vatia, who retired into complete isolation, and finds something hollow about it: the man had achieved quiet without achieving anything internal. Seneca calls him not a retiree but someone in hiding. Solitude can be as much a dodge as noise, if you arrive there hoping the silence will do the work for you.
Toni Morrison didn't have Seneca's bath-noise problem exactly, but she had something equivalent. When she wrote her first novels, she was working full-time as an editor at Random House and raising two young sons alone. She wrote The Bluest Eye in fragments — on the commuter train, in her lunch hour, at a table where children were making ordinary children's noise nearby. She said in interviews that she stopped waiting for the right conditions because the right conditions were never coming. By the time Beloved appeared in 1987 — the novel that would win the Pulitzer — she had built a capacity for concentration that had nothing to do with quiet. The world inside was simply more present to her than whatever was happening outside it. Her Paris Review interview is the best place to hear her describe how that discipline was built, in her own words.
The bathhouse makes noise. It always will. Seneca's letter doesn't end with a technique for tuning it out — it ends with the suggestion that whether you can work in noise is really a question about whether you've found something worth working on.