He had a large influence on the development of mathematics and science, principally through the group which he built up in Paris which was seen as the leading one in France. Mathematicians such as Varignon, de L'Hôpital, Guisnée and Reyneau all became part of this circle at the Oratory.
Siya ay may isang malaking impluwensiya sa pag-unlad ng matematika at agham, lalung-lalo na sa pamamagitan ng grupo na kung saan siya nakapaloob sa Paris na kung saan ay makikita bilang ang nangungunang isa sa France. Mathematicians tulad ng Varignon, de L'Hôpital, Guisnée at Reyneau lahat ng naging bahagi ng bilog na ito at ang kahusayan sa pagtatalumpati.