The little spot of light showed clearly, for the silent room was dark.
He stood for a moment watching it slowly rising, the only spot of light in that dark scene.
An opened book moved slowly into the spot of light.
It was the only spot of light in the room.
He smiled, his eyes shining like two spots of light.
Except for a single spot of white light, the room was in total darkness.
He then looked back at the sky, and that tiny spot of light.
The spot of light in the center begins to grow, until it is all that Data can see.
But there's a spot of light from the hole in the tree, and I can watch that.
And he could make out the tiny spot of light that was the opening to the first chamber.