In the verse Cinna writes
I am slandered, it’s said.
But the man doesn’t write
Whose verses aren’t read.

[Versiculos in me narratur scribere Cinna.
Non scribit, cuius carmina nemo legit.]

Martial (AD c.39-c.103) Spanish Roman poet, satirist, epigrammatist [Marcus Valerius Martialis]
Epigrams [Epigrammata], Book 3, epigram 9 (3.9) [tr. Nixon (1911)]

"On Cinna." (Source (Latin)). Alternate translations:

Cinna writes verses against me, 'tis said:
He writes not, whose bad verse no man doth read.
[tr. Fletcher (c. 1650)]

Against me Cinna, as I hear, indites;
Since none him reads, who can affirm he writes?
[tr. Anon. (1695)]

Cinna's verse upon me, they say, keenly procedes.
He's beli'd: for he writes not, whom nobody reads.
[tr. Elphinston (1782). 12.23]

Jack writes severe lampoons on me, 'tis said
----But he writes nothing, who is never read.
[tr. Hodgson (c. 1810)]

Cinna, I am told, is a writer of small squibs against me. A man cannot be called a writer, whose effusions no one reads.
[tr. Bohn's Classical (1859)]

Cinna is said to write verses against me. He doesn't write at all whose poems no man reads.
[tr. Ker (1919)]

He publishes lampoons on me, 'tis said;
How can he publish who is never read?
[tr. Pott & Wright (1921)]

Cinna, a writer, attacks me with screeds.
But he's not a writer whom nobody reads.
[tr. Ericsson (1995)]

His verse was meant to strike me low,
But since he wrote it -- who will know?
[tr. Wills (2007)]

I hear Cinna has written some verses against me.
A man is no writer
if his poems have no reader.
[tr. Kennelly (2008)]

Cinna, they say, writes verse attacking me.
He doesn’t write, whose verses none will see.
[tr. McLean (2014)]

They say Cinna is writing epigrams and I'm his target. He's not "writing" if no one's reading him.
[tr. Nisbet (2015)]

They say that Cinna slams
me in his epigrams.
A poem no one has heard
has really not occurred.
[tr. Juster (2016)]

Cinna attacks me, calls me dirt?
Let him. Who isn't read, can't hurt.
[tr. O'Connell]

They say Cinna writes little poems about me.
He’s no writer, whose verse nobody reads.
[tr. Kline]