Sometimes, opening up your eyes and realising what you have - no matter how little you think - helps you find yourself.

If [Donald Trump] is paid zero [taxes], that means zero for troops, zero for vets, zero for schools or health.

I think talking's important. I think aspirations are critical.

I don't feel particularly courageous.

The importance of building relationships among colleagues, of trying to create coalitions behind the issues that you are championing, was not something I ever had much insight into until I was elected and started serving in the Senate.

Before it was called Hillarycare - I mean, before it was called ObamaCare it was called Hillarycare because we took them on, and we weren't successful, but we kept fighting and we got the children's health insurance program. Every step along the way I have stood up, and fought, and have the scars to prove it.

For 40 years, everyone running for president has released their tax returns. You can go and see nearly, I think, 39, 40 years of our tax returns, but everyone has done it.