A thing is a hole in a thing it is not.
A hole is a thing in a hole it is not.
A thought is the absence of a thought it is not.
Consciousness is the absence of a consciousness it is not.
The ground gallops when there is a horse.
In terms of mindblogging, this Autologlyphs website has some totally fascinating word/text explorations, from ambigrams and autologlyphs to the image above for overhead project of a mobius strip text which when projected shows the words "mobius strip" three times, though it's only written one and a half times.