Warren Buffett is one of the most successful investors in the world. He was born in 1930 and learned the value of hard work from his parents. After graduating from Columbia Business School, he started buying stocks and built his fortune through honesty, thrift, and perseverance. By 1962 he had taken over a struggling textile company called Berkshire Hathaway which he transformed into a highly profitable multinational conglomerate. Today Berkshire Hathaway owns over 60 companies and Buffett's net worth is over $80 billion, making him the second richest person in the world. His success is largely due to his passion for business, hiring talented managers, and focus on long term investments with a margin of safety.