Pierre de Fermat BoisjoliI was a civil engineer working on dockes and I had two crisis of skizophrenia on two different worksites. They shouted me out: I became a writer. I wrote 15 books and Diary of a mendicant is my best one. I am a great mathematician and I used the Capial of Karl Mark to find the mathematical model by tensors of Riemann to joint economy and social sciences. Read More Read Less