D’Alembert was always surrounded by controversy. … he was the lightning rod which — Jean le Rond d'Alembert
I am worn out by the insults and vexations that this work brings down on us. — Jean le Rond d'Alembert
Geometry, which should only obey Physics, when united with it sometimes commands — Jean le Rond d'Alembert
Thus metaphysics and mathematics are, among all the sciences that belong to — Jean le Rond d'Alembert