4. Bernard Arnault

Net worth: $41 Billion

Date of Birth: 5 March 1949

Country of Citizenship: France

Fascinating facts: Bernard Arnault was born in a family of entrepreneurs. After graduating from an engineering college, he joined his father's business of construction and real estate. Bernard is a man of taste and prefers spending his time playing tennis and the piano in either of his many luxurious homes and classy villas.

Most memorable quote: "Luxury goods are the only area in which it is possible to make luxury margins."

Best tip on wealth: "I think in business, you have to learn to be patient. Maybe I'm not very patient myself. And I think what I've learned the most is be able to wait for something and get it when it's the right time."

3. Warren Buffett

Net worth: $44 Billion

Date of Birth: 30 August 1930

Country of Citizenship: USA

Fascinating facts: Warren Buffett bought his first share at a budding age of 11 and filed his first income tax return at the age of 13. Unlike many billionaires, Buffett still lives in the same small 3 bedroom house he bought more than five decades ago which does not have a fence around it. Despite of being a billionaire since 1985, he drives himself without security and he reportedly doesn't use a cell phone or have a computer on his desk. In 2006, he publicized he would give 85 percent of his wealth to charity.

Most memorable quote: Be fearful when others are greedy and greedy when others are fearful.

Best tip on wealth: "It's better to hang out with people better than you. Pick out associates whose behavior is better than yours and you'll drift in that direction."