Bangalore: Are you planning to quit your job? If yes, then you should definitely know how to resign in a professional and a graceful manner. According to Alison Doyal, a Guide at about.com, your resignation letter should be positive as there is no point in criticizing a company that you have decided to quit. However, there are some resignation letters that are considered to be the greatest of all time listed by the Business Insider on their website. Here is the list below.

1. Greg Smith:  Goldman Sach’s executive, Greg Smith, who served as head of the firm's U.S. equity derivatives business in Europe, quits the job on 14^th March this year, after 12 years with the Wall Street icon. Greg noticed the investment bank's culture is little more than a deadly heat of greed that bears little resemblance to its once illustrious past. According to the “New York Times” Greg mentions in his infamous op-ed piece that his departure is being motivated by the shift in the leadership style that no longer places clients' interests ahead of the firm’s. In his resignation letter Greg told the world that the bank is toxic and destructive.