Activity
-
Shan Foster posted an update 1 year, 5 months ago
Each problem that I solved became a rule which served afterwards to solve other problems. (Rene Descartes, Discours de la Methode)
Shan Foster posted an update 1 year, 5 months ago
Each problem that I solved became a rule which served afterwards to solve other problems. (Rene Descartes, Discours de la Methode)