It's clear to me when you do private equity well, you're making companies more efficient and helping them grow and become more profitable. That success means our investors - such as public pension funds - benefit, which contributes to the economic wealth of society.

I realised how rich I had become and I asked myself, 'Do I really want to be the richest person in the cemetery?

I've given some money to the scholarships in the District of Columbia, to the best students in D.C... many of the students have written me letters telling me they could not have afforded to go to college without the scholarship and money I've given them.

I am involved in a lot of nonprofits. And when I reached the ripe old age of 60, I wanted to provide leadership to some I had been involved in.

What do most people say on their deathbed? They don't say, 'I wish I'd made more money.' What they say is, 'I wish I'd spent more time with my family and done more for society or my community.

Obama had reached out to the business community, they just haven't liked all of his decisions and some of his rhetoric. But generally, I think the administration is quite open and accessible.

I'm on a lot of nonprofit boards, but if I didn't enjoy it I wouldn't do it. I haven't yet done anything that's transformational in philanthropy. But I hope at some point to target two or three causes or organizations and really make transformational gifts.