(After: M.C. Escher)
The cube is simply outlined; just its form –
A black void where its solid planes should be
And all around its enigmatic shape –
In spectral colours red, gold, green and blue,
Contingently arranged in such a way
That it appears to shift, in space, each time
The eyes move to accommodate its lines,
Chromatic properties and amplitude.
This optical illusion can
Intrigue the mind only a little while
Before purely æsthetic qualities
Grow to predominate the interest.
When art stirs the imagination and the sense
To pleasure it succeeds, though it seems innocence.