Robert Bridges, ed. (18441930). The Spirit of Man: An Anthology. 1916.
From Enneads
Plotinus (c. 204/5270)
FOR1 the absolute good is the cause and source of all beauty, just as the sun is the source of all daylight, and it cannot therefore be spoken or written; yet we speak and write of it, in order to start and escort ourselves on the way, and arouse our minds to the vision: like as when one showeth a pilgrim on his way to some shrine that he would visit: for the teaching is only of whither and how to go, the vision itself is the work of him who hath willed to see.