Pierre-Simon Laplace's father, Pierre Laplace, was comfortably well off in the cider trade.At the age of 16 Laplace entered Caen University.Although Laplace was only 19 years old when he arrived in Paris he quickly impressed d'Alembert.Laplace tried to gain admission again in 1772 but this time Cousin was elected.We have already mentioned some of Laplace's early work.Laplace's reputation steadily increased during the 1770s.The effect on his colleagues would have been only mildly eased by the fact that Laplace was right!Laplace had a wide knowledge of all sciences and dominated all discussions in the Academy.Laplace was promoted to a senior position in the Acadmie des Sciences in 1785.Laplace married on 15 May 1788.