raindrop from heaven

It is as if a raindrop fell from heaven into a stream or fountain and became one with the water in it so that never again can the raindrop be separated from the water of the stream; or as if a little brook ran into the sea and there was thenceforward no means of distinguishing its water from the ocean; or as if a brilliant light came into a room through two windows and though it comes in divided between them, it forms a single light inside.

St Teresa of Avila