PHILINTE: A gentleman may be respected still,
Whether he writes a sonnet well or ill.
That I dislike his verse should not offend him;
In all that touches honor, I commend him;
He’s noble, brave, and virtuous — but I fear
He can’t in truth be called a sonneteer.

On peut être honnête homme, et faire mal des vers,
Ce n’est point à l’honneur que touchent ces matières,
Je le tiens galant homme en toutes les manières,
Homme de qualité, de mérite et de cœur,
Tout ce qu’il vous plaira, mais fort méchant auteur.

Molière (1622-1673) French playwright, actor [stage name for Jean-Baptiste Poquelin]

Le Misanthrope, Act 4, sc. 1 (1666) [tr. Wilbur (1954)]
    (Source)

(Source (French)). Alternate translations:

One may be a perfect gentleman, and write bad verses; those things have nothing to do with honour. I take him to be a gallant man in every way; a man of standing, of merit, and courage, anything you like, but he is a wretched author.
[tr. Van Laun (1878)]

One may be an excellent man, and yet write bad verses. Honour is not affected by such things. I esteem him a gallant man in all respects, a man of quality, merit, and courage; all you please, but he is a very bad author.
[tr. Matthew (1890)]

A man can be a gentleman and make bad verses. Such matters do not touch his honor, and I hold him to be a gallant man in every other way; a man of quality, of courage, deserving of anything you please, but -- a bad writer.
[tr. Wormeley (1894)]

One may be a perfect gentleman and yet write bad verses; these things have no concern with honolur. I believe him to be an honourable man in every way; a man of standing, of merit, of courage, anything you like, but he is a miserable author.
[tr. Waller (1903)]

A man may be
A perfect gentleman, and write poor verse.
These matters do not raise the point of honor.
I hold him a true man in all respects,
Brave, worthy, noble, anything you will,
But still, a wretched writer.
[tr. Page (1913)]

One can be virtuous and a wretched poet;
That's not a matter to affect one's honor.
I think him an accomplished gentleman,
A man of rank, merit, and character,
Whatever you like; but he's a dreadful author.
[tr. Bishop (1957)]

Even a gentleman can write bad verse.
These things concern our honor not a whit.
That he's a gentleman I do admit,
A man of quality, merit, and heart,
All that you like -- his authorship apart.
[tr. Frame (1967)]

Anyone may be an honorable man, and yet write verse badly.
[ed. Bartlett (1992)]