Microsoft founder Bill Gates is publishing his first memoir, "Source Code: My Beginnings." He has spent decades and billions crafting his image — but his critics remain unimpressed.

It's towards the end of our interview that Bill Gates reveals new numbers on how much his charitable Foundation has now spent in its efforts to combat preventable diseases and reduce poverty. "I've given over 100 billion,

The older he gets, the more Bill Gates is surprised by what the world dishes up. Take billionaires. There are many now from the tech industry, quite a few with politics that skew forcefully right. “I always thought of Silicon Valley as being left of center,