Meditations 8.54

No longer let thy breathing only act in concert with the air which surrounds thee, but let thy intelligence also now be in harmony with the intelligence which embraces all things. For the intelligent power is no less diffused in all parts and pervades all things for him who is willing to draw it to him than the aerial power for him who is able to respire it.

Marcus Aurelius, Meditations 8.54, translated by George Long

Be no longer content merely to breathe in unison with the all-embracing air, but from this moment think also in unison with the all-embracing Intelligence. For that intelligent faculty is every where diffused and offers itself on every side to him that can take it in no less than the aerial to him that can breathe.

Marcus Aurelius, Meditations 8.54, translated by C. R. Haines