They assert that their program is purely peaceful. . . . We want them to demonstrate clearly in the actions they propose that they have truly abandoned any nuclear weapons ambition.

This is our moment...while we breathe, we hope. And where we are met with cynicism and doubts and those who tell us that we can't, we will respond with that timeless creed that sums up the spirit of a people: Yes, we can.

One of the things you learn as president is, as powerful as this office is, you have limited bandwidth. And the time goes by really quickly and you're constantly making choices, and there are pressures on you from all different directions - pressures on your attention, not just pressures from different constituencies. And so you have to be pretty focused about where can you have the biggest, quickest impact.

It may be something that future generations are more open to, but I am pretty confident that for the foreseeable future, using the argument of nondiscrimination, and "Let's get it right for the kids who are here right now," and giving them the best chance possible, is going to be a more persuasive argument.

A low-carbon, clean energy economy can be an engine of growth for decades to come.

Keeping our military strong means keepin' our families strong.

To resolve this issue will require Iran to come to the table and discuss in a clear and forthright way how to prove to the international community that the intentions of their nuclear program are peaceful. [...] The question is going to be whether in these discussions they show themselves moving clearly in that direction.