The greatest investor of all times, Warren Buffet is my guru in the world. One will require 2 crores to buy one share in Berkshire Hathway. His mantra is to buy when there is sale of shares at rock bottom prices. Wait for years to buy shares and wait for years to sell shares. His greatest mantra is remained invested your entire life. He used to say that derivates are instrument of mass destruction, but he wrotes puts in the year 2008 and had a whopping 6 billion$ as notional losses. I dont what happened after that