2. Bill Gates

Net worth: $61 Billion

Date of Birth: 28 October 1955

Country of Citizenship: USA

Fascinating facts: Bill Gates, son of a prominent lawyer, developed an interest in computer programming at the age of 13. When he was 15, his competitiveness, innovation and business insight lead him to team with Paul Allen to come up with a program which was sold for $20,000. Since then, he has been dominating the software industry as well as the Forbes richest list. At present, he lives in 66,000 sq ft hillside home that attracts $991,000 property tax each year. He announced to donate all his wealth to charity and leave maximum of $10 million to each of his 3 children.

Most memorable quote: "Life is not fair; get used to it."

Best tip on wealth: We always overestimate the change that will occur in the next two years and underestimate the change that will occur in the next ten. Don't let yourself be lulled into inaction.

1. Carlo Slim Helu

Net worth: $69 Billion

Date of Birth: 28 January 1940

Country of Citizenship: Mexico

Fascinating facts: The first 'World's Richest' man from a developing nation, Carlo Slim Helu, bought his first bank shares at the age 12 years. Being famous for his penny-wise attitude, Helu has lived in the same modest home for the past 30 years. His wealth is equivalent to 5 percent of Mexico's economic output and he earns almost $30 million daily.

Most memorable quote: "When you live for others' opinions, you are dead. I don't want to live thinking about how I'll be remembered,"

Best tip on wealth: Maintaining austerity in good times strengthens profits and accelerates the development of the company, and averts the bitterly drastic adjustments in times of crisis.