His works are contained in his five volume ''"Celestial Mechanics"'' (1799-1825). French scientists, especially Laplace developed and systematized [[Isaac Newton]]'s ideas into modern Classical mechanics in the late 18th century. | His works are contained in his five volume ''"Celestial Mechanics"'' (1799-1825). French scientists, especially Laplace developed and systematized [[Isaac Newton]]'s ideas into modern Classical mechanics in the late 18th century. |