In unexperienced infancy
Many a sweet mistake doth lie:
Mistake though false, intending true;
A seeming somewhat more than view;
That doth instruct the mind
In things that lie behind,
And many secrets to us show
Which afterwards we come to know.

Thus did I by the water’s brink
Another world beneath me think;
And while the lofty spacious skies
Reversèd there, abused mine eyes,
I fancied other feet
Came mine to touch or meet;
As by some puddle I did play
Another world within it lay.

From Thomas Traherne, Shadows in the water