Not being able to control events, I control myself, and adapt myself to them if they do not adapt themselves to me.

[Ne pouvant regler les evenemens, je me regle moy-mesme : & m’applique à eux, s’ils ne s’appliquent à moy.]

Michel de Montaigne (1533-1592) French essayist

Essays, Book 2, ch. 17 (2.17), “Of Presumption [De la Presomption]” (1578) [tr. Cohen (1958)]
    (Source)

This essay appeared in the 1st (1580) edition, and was expanded in succeeding editions. This passage was added in the 2nd (1588) edition.

(Source (French)). Alternate translations:

Being unable to direct events, I governe my selfe; and if they apply not themselves to me, I apply my selfe to them.
[tr. Florio (1603)]

Not being to govern events I govern myself, and apply myself to them, if they do not apply themselves to me.
[tr. Cotton (1686)]

Not being able to govern events, I govern myself, and apply myself to them, if they will not apply themselves to me.
[tr. Cotton/Hazlitt (1877)]

Being unable to regulate events, I regulate myself, and adapt myself to them if they do not adapt themselves to me.
[tr. Ives (1925)]

Not being able to rule events, I rule myself, and adapt myself to them if they do not adapt themselves to me.
[tr. Frame (1943)]

Not being able to control events I control myself: if they will not adapt to me then I adapt to them.
[tr. Screech (1987)]

Since I cannot control events, I take control of myself and suit myself to them, if they do not suit me.
[tr. Atkinson/Sices (2012)]