Lagrange ( 1736 -- 1813 ) developed a new approach to Newtonian mechanics emphasizing energy more than force .
Lagrange ( 1736 -- 1813 ) made progress on the three body problem , discovering the Lagrangian points .
Lagrange ( 1736 -- 1813 ) developed a new approach to Newtonian mechanics emphasizing energy more than force , and made progress on the three body problem , discovering the Lagrangian points .