If you can resolve this transition of [Bashar] Assad, that is absolutely possible, but you have to have a clarity for everybody about the way forward.

I'm going to be a president who believes in science.

We need to guarantee equal rights and civil rights and say that, here in America, workers have the right to organize - women have the right to choose - and justice belongs to everyone regardless of race or gender or sexual orientation.

And if [Vladimir Putin] does fight ISIL alone, how does it work out for Russia to have sided with Assad, sided with Iran, sided with Hizballah, when they're trying to reach out to the rest of the Sunni world in the region? That's not a good equation for Russia.

President Clinton was often known as the first black president. I wouldn't be upset if I could earn the right to be the second.

Bush-McCain stategy in Iraq is policy to stay, not to win.

I think it's time we had a President who will provide the only real economic security: good jobs. A President who will provide middle class payroll tax relief to get money in the pockets of workers who will spend it, not more tax giveaways for those at the top to stimulate the economy in the Cayman Islands and Bermuda. A President who will index the minimum wage to inflation and raise it from a 30 year low, not increase the tax burden on the middle class and those struggling to join it.