although I say that the soul "sees" Him, it really sees nothing, for this is not an imaginary, but a notably intellectual vision, in which is revealed to the soul how all things are seen in God, and how within Himself He contains them all. Such a vision is highly profitable because, although it passes in a moment, it remains engraven upon the soul. It causes us the greatest confusion, by showing us clearly how wrongly we are acting when we offend God, since it is within God Himself -- because we dwell within Him, I mean -- that we are committing these great sins.

(Saint Teresa of Avila)