We expect the states to show us whether or not we're achieving simple objectives-like literacy, literacy in math, the ability to read and write.

Fool me once, shame on - shame on you. Fool me - you can't get fooled again.

Leadership to me means duty, honor, country. It means character, and it means listening from time to time.

Terrorist attacks can shake the foundations of our biggest buildings, but they cannot touch the foundation of America. These acts shatter steel, but they cannot dent the steel of American resolve.

Freedom itself was attacked this morning by a faceless coward, and freedom will be defended.

Our enemies are innovative and resourceful, and so are we. They never stop thinking about new ways to harm our country and our people, and neither do we.

Freedom is not our gift to the world it is God's gift to humanity.

To those of you who received honours, awards and distinctions, I say, well done. And to the C students, I say, you too can be president of the United States.

I do solemnly swear that I will faithfully execute the Office of President of the United States, and will to the best of my Ability, preserve, protect and defend the Constitution of the United States

A dictatorship would be a heck of a lot easier, there's no question about it.

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

Between the happening of a historical process and its recognition by rulers, a lag stretches, full of pitfalls.

Amazingly when you add life and consciousness to the equation you can actually explain some of the biggest puzzles of science.

I like the freedom of research. Plus, if I fail in science, I know I can always survive because I have an M.D. This has been my insurance policy.

In 1985 as a teenager in Kenya, I was an adamant member of the Muslim Brotherhood.

I could say, as a member of Congress, we usually get an alert if something is going to happen at the Capitol.

Hurricane season routinely strikes the Caribbean harder than the U.S.

That whatever a man says, promises, or resolves in passion he must stick to later on when he is cold and sober--this demand is among the heaviest burdens that weigh on humankind.

We've always been in favor of improved wages for workers. When you have a strong middle class, they want to buy more stuff at Costco.

You may say organize, organize, organize; but there may be so much organization that it will interfere with the work to be done.

I have full cause of weeping, but this heart shall break into a hundred thousand flaws or ere I'll weep.