Simon Denis Poisson.Poisson's father decided that the medical profession would provide a secure future for his son.However, Poisson found that he was ill suited to be a surgeon.Few people can have achieved academic success as quickly as Poisson did.A memoir on finite differences, written when Poisson was 18, attracted the attention of Legendre.Poisson ... was content to remain totally unfamiliar with the vicissitudes of experimental research.Bossut was 76 years old at the time and, had he died, Poisson would have gained a place.In 1808 and 1809 Poisson published three important papers with the Academy of Sciences.Poisson had made considerable progress with the problem before Malus died on 24 February 1812.Poisson continued to add various responsibilities to his already busy life.