The founder of Microsoft, 68-year-old Bill Gates has said that he intends to work for another 20 or 30 years.
He has said that he intends to follow in the footsteps of Warren Buffett, who is chairman and chief executive of Berkshire Hathaway, although he is 94 years old.
"My friend Warren Buffett still goes to the office six days a week," Gates told CNBC. "So I hope my health allows me to be like Warren."
Gates says there is still a lot of work to do. He remains a "technology advisor" and spends most of his time using his own money — nearly $128 billion, according to Forbes — to fund possible solutions to global issues he sees as most pressing. such as disease, poverty, climate change and access to health care and education.