Philosophia mathematica, theologia naturalis solida

Erhard Weigel (1625-1699), the important mathematician and astronomer, taught mathematics at Jena University from 1653 to 1699. He published about 50 doctoral theses and scientific essays. His knowledge of mathematics and astronomy and his ability to explain complex information comprehensibly, his numerous inventions, his educational projects, his support of the Gregorian calendar reform in the Protestant countries and the foundation of an academy of sciences established his importance to the history of sciences. In his late scientific career, he became increasingly interested in philosophical questions, which is demonstrated by this reprint of the Philosophia mathematica, a permanent source of inspiration to Christian Wolff.