Marcus Aurelius
Meditations 8.60
In one way an arrow moves, in another way the mind. The mind indeed, both when it exercises caution and when it is employed about inquiry, moves straight onward not the less, and to its object.
Marcus Aurelius, Meditations 8.60, translated by George Long
One is the way of an arrow, another of the mind. Howbeit the mind, both when it cautiously examines its ground and when it is engaged in its enquiry, is none the less moving straight forward and towards its goal.
Marcus Aurelius, Meditations 8.60, translated by C. R. Haines