Oh, you're going to love this[1]: > "Ladran, luego cabalgamos" ("They bark, therefore we ride") or "Ladran, Sancho, señal que cabalgamos" ("They bark, Sancho,

Oh, you're going to love this[1]: > "Ladran, luego cabalgamos" ("They bark, therefore we ride") or "Ladran, Sancho, señal que cabalgamos" ("They bark, Sancho, sign that we ride") is also atributed to the book but it actually comes from Goethe's 1808 poem Kläffer ("Barker"; obviously, without the interjection of "Sancho": :But their strident barking / is only a sign that we ride"). In its stock phrase version, it's used to say that an attack from one's enemies over a recently taken action is a sign that you are doing the right thing. There is an even more insulting version, "Ladran, señal que son perros" ("They bark, sign they are dogs"). [1]https://tvtropes.org/pmwiki/pmwiki.php/Trivia/DonQuixote https://tvtropes.org/pmwiki/pmwiki.php/Trivia/DonQuixote