Africa - Alhambra -Escher.
The "science" of design
is, in fact, only a simplified and specialized part of the branch of Physics
devoted to the study of crystalline form, "crystallography",
just as the latter, tothe mathematician, is nothing but an application
of the great branch ofmathematics, the "Theory of Groups".
H.J. Woods - quoted in "Symmetry of Culture" .