I believe it is true. It is said of light that "it conceals more than it
reveals"; that there is no hiding-place like light, if it is only bright
enough; and the brighter the light is, the more impossible it is to find
what has been hidden there!

I remember when I first saw the electric light; it was in the middle of the
night, as the boat on board which I had been crossing the sea which divides
Wales from Ireland, came in at the pier. All around, the whole scene was
lighted up; the dark water shone, and the people came on shore and looked
for their luggage, and took their places in the tram, no one thinking of
such a thing as a lamp, for all was clear as daylight.

But this light, bright as it was, lighted only a very little space; as the
train moved off we left it behind us, and hurried on into the dark night.
How much more wonderful is the light of the sun which shines night and day,
always giving light to some part of the world!

But sunlight, moonlight, and electric light, all these shine upon the
outside, upon what we can see. God, who is Light, shines upon what is
within, upon that heart which is by nature so dark that there is not one
bright spot there, so that if God did not shine into it no light could ever
come.

Have you ever seen, when the moon has been shining over the sea, making a
long, broad pathway of brightness, a ship, as it sails along, suddenly come
into that bright track? It is a beautiful sight; just for one moment every
mast and sail all stand out with such distinctness that you say, "Oh, I can
see her now perfectly!" Then, while you look, she has crossed the shining
path, and you can but just trace her dim outline, and know that a ship is
sailing there.