Meditations 5.19

Things themselves touch not the soul, not in the least degree; nor have they admission to the soul, nor can they turn or move the soul: but the soul turns and moves itself alone, and whatever judgments it may think proper to make, such it makes for itself the things which present themselves to it.

Marcus Aurelius, Meditations 5.19, translated by George Long

Things of themselves cannot take the least hold of the Soul, nor have any access to her, nor deflect or move her; but the Soul alone deflects and moves herself, and whatever judgments she deems it right to form, in conformity with them she fashions for herself the things that submit themselves to her from without.

Marcus Aurelius, Meditations 5.19, translated by C. R. Haines