Self Referential Art

Escher traveled to Alhambra and drew inspiration from the Islamic designs. 
I can’t publish Escher’s images here because they are copyrighted. But follow this link, the official site for his foundation, and take your time soaking it up:

How did Escher go further?
He made new metaphysical statements. Self-referential art. And that’s similar to the processes we’ve been creating in our code.
Let’s make our own tessellations like Escher did, and then we’ll go much further…