Meditations 6.32

I consist of a little body and a soul. Now to this little body all things are indifferent, for it is not able to perceive differences. But to the understanding those things only are indifferent which are not the works of its own activity. But whatever things are the works of its own activity, all these are in its power. And of these however only those which are done with reference to the present; for as to the future and the past activities of the mind, even these are for the present indifferent.

Marcus Aurelius, Meditations 6.32, translated by George Long

I consist of body and soul. To the body indeed all things are indifferent, for it cannot concern itself with them. But to the mind only those things are indifferent which are not its own activities; and all those things that are its own activities are in its own power. Howbeit, of these it is only concerned with the present; for as to its activities in the past and the future, these two rank at once among things indifferent.

Marcus Aurelius, Meditations 6.32, translated by C. R. Haines