In political institutions, almost everything we call an abuse was once a remedy.

[Presque tout ce que nous appelons un abus fut un remède dans les institutions politiques.]

Joseph Joubert (1754-1824) French moralist, philosopher, essayist, poet

Pensées [Thoughts], ch. 18 “Du Siècle [On the Age],” ¶ 21 (1850 ed.) [tr. Auster (1983), 1813 entry]
    (Source)

(Source (French)). Alternate translation:

In political institutions nearly everything that we now call an abuse, was once a remedy.
[tr. Lyttelton (1899), ch. 17, ¶ 8]