Charles Sanders Peirce was an American scientist, mathematician, logician, and philosopher who is sometimes known as "the father of pragmatism". According to philosopher Paul Weiss, writing in 1934, P
Peirce's birthplace. Now part of Lesley University's Graduate School of Arts and Social Sciences.
"The World on a Quincuncial Projection", 1879. Peirce's projection of a sphere onto a square keeps angles true except at four isolated points on the equator, and has less scale variation than the Mercator projection. It can be tessellated; that is, multiple copies can be joined continuously edge-to-edge.