But when I met Merlin, and asked him if these things were truth–
The shining dragon and the naked child
Descending in the glory of the seas–
He laughed as is his wont, and answered me
In riddling triplets of old time, and said:

`”Rain, rain, and sun! a rainbow in the sky!
A young man will be wiser by and by;
An old man’s wit may wander ere he die.
Rain, rain, and sun! a rainbow on the lea!
And truth is this to me, and that to thee;
And truth or clothed or naked let it be.
Rain, sun, and rain! and the free blossom blows:
Sun, rain, and sun! and where is he who knows?
From the great deep to the great deep he goes.”

The Coming of Arthur
by Lord Alfred Tennyson
(1809-1892)