When a politician uses the word 'folks,' we should brace ourselves for the deceit, or worse, that is coming.

If a child from an Amazonian hunter-gatherer tribe comes to Boston, is raised in Boston, that child will be indistinguishable in language capacities from my children growing up here, and vice versa.

Growing up in the place I did I never was aware of any other option but to question everything.

I don't join the New Atheists. So, for example, I wouldn't have the arrogance to lecture some mother who hopes to see her dying child in Heaven - that's none of my business, ultimately. I won't lecture her on the philosophy of science.

Faced with the crippling sanctions, Iran could simply decide it is paying too high a cost to pursue its nuclear program and could opt for negotiations and reconciliation with the United States and other members of the international community. This is clearly the preferred option of American leaders.

Anyone who has ever looked into the glazed eyes of a soldier dying on the battlefield will think hard before starting a war.

Some leaders think time will solve the problem. Their hope is that Assad's regime will ultimately fall from the heavy toll of the horrors it has spawned. From past experience with such regimes, this scenario is unlikely to happen.

In a world of complex threats, our security and leadership depends on all elements of our power - including strong and principled diplomacy.