Dishonesty is not the only alternative to honesty. There is also the highly underrated virtue of shutting up.

Judith Martin (b. 1938) American author, journalist, etiquette expert [a.k.a. Miss Manners]

“Miss Manners,” syndicated column (2014-12-19)
    (Source)

Collected in Minding Miss Manners: In an Era of Fake Etiquette (2020), though with a slight rephrasing:

The only alternative to honesty is not dishonesty. There is also the highly underrated virtue of shutting up.