“Pure mathematics is, in its way, the poetry of logical ideas.
One seeks the most general ideas of operation which will
bring together in simple, logical and unified form the largest
possible circle of formal relationships. In this effort toward
logical beauty spiritual formulas are discovered necessary
for the deeper penetration into the laws of nature.”
— Albert Einstein, May 1, 1935, obituary for Emmy Noether
(Quoted in part, without source, in Quanta Magazine yesterday.)