(excerpted from A. Borovik's blog Mathematics under the microscope)
This work by William Blake could suggest that the mathematician and its mathematics emerge from geological sediments, old life fossilized, crystals and stones, through a geometrical body, allegorically as perfect as his theorems, and reminiscent of the Renaissance artists such as Leonardo da Vinci associations between perfect body proportions, art, architecture and the Universe.
It also reminds of the much later and severely misleading “path of evolution” images going from fish to men.
