Meditations 9.26

Thou hast endured infinite troubles through not being contented with thy ruling faculty when it does the things which it is constituted by nature to do. But enough [of this].

Marcus Aurelius, Meditations 9.26, translated by George Long

By not being content with thy ruling Reason doing the work for which it was constituted, thou hast borne unnumbered ills. Nay, 'tis enough!

Marcus Aurelius, Meditations 9.26, translated by C. R. Haines