No doubt we should not speak of seeing but, instead of seen and seer, speak boldly of a simple unity. For in this seeing we - neither distinguish nor are there two. The man ... is merged with the Supreme, one with it. Only in separation is there duality. This is why the vision baffles telling; for how can a man bring back tidings of the Supreme as detached when he has seen it as one with himself. . . . Beholder was one with beheld . . . he is become the unity, having no diversity either in relation to himself or anything else . . . reason is in abeyance and intellection, and even the very self, caught away, God-possessed, in perfect stillness, all the being calmed.

Plotinus