I believe marriage is a relationship between a man and a woman.

Iran's nuclearization is the greatest single national security threat America faces.

Education is the investment our generation makes in the future.

I don't doubt for a second that Neil Armstrong's spirit is still with us: that unique blend of optimism, humility and the utter confidence that when the world needs someone to do the really big stuff, you need an American.

In recent years, we have seen the United States back away from pressuring the Castro regime, under the misguided view that placating them with an open hand would yield progress. That naivete has invited only more cruelty and oppression in return.

Reforming the way the state works with businesses and providing incentives for employers will help preserve and create new jobs in Massachusetts.

Mr. President, you were elected to lead. You chose to follow. And now it's time for you to get out of the way.