For what is it that the human heart has not space for, and to spare?
After the whole world is received home into a human heart, there is room, and, indeed, hunger, for another world, and after that for still another.

The sun is--I forget how many times bigger than our whole world, and yet we can open our heart and take down the sun into it, and shut him out again and restore him to his immeasurable distances in the heavens, and all in the twinkling of an eye.

As for instance.

As I wrote these lines I read a report of a lecture by Sir Robert Ball in which that distinguished astronomer discoursed on recent solar discoveries.

A globe of coal, Sir Robert said, as big as our earth, and all set ablaze at the same moment, would not give out so much heat to the worlds around as the sun gives out in a thousandth part of a second.