Simplicity and order are, if not the principal, then certainly the most important guidelines for human beings in general.
M. C. EscherI came to the ... open gate of mathematics. From here, well-trodden paths lead in every direction, and since then I have often spent time there. Sometimes I think ... I have trodden all the paths ... and then I suddenly discover a new path and experience fresh delights.
M. C. Escher