8. Jean-Jacques Dortous de Mairan (1678-1771), physicist, astronomer, and writer. As soon as I could work part time, which was when I turned 16 (and since we lived in a small town I could actually start earlier as the employer pretended I was older), I started working for the postal service during the summer break. Every payday I went to the nearby bank branch and deposited my money to my very first savings account. Growing Monthly Profits with Low Risk & Less Fee.