We are the change we have been waiting for.

I think that most Americans don't resent people for getting rich. They want to get rich themselves.

I'll change the posture of our federal government from being one of the most anti-science administrations in American history to one that embraces science and technology.

We will convey our deep appreciation for the Islamic faith, which has done so much over the centuries to shape the world - including in my own country.

I want to reduce America's deficit by cutting spending that we don't need but also by asking the wealthy to do a little bit more so that we can invest in things like research and technology that are the key to a 21st century economy.

I think perhaps education doesn’t do us much good unless it is mixed with sweat.

When the economy's shrinking, providing jobs, spending on things like infrastructure can actually increase revenue and drive down debt. And then, there's going to be a time at which point debt has to be taken care of.