We will fight with full force and might of the United States military.

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.

I like to work, read, learn, and understand life.

You turn friends away before you discover they were good after all

I’m a natural-born ninja saddled with the awkward grace of a drunk camel.

Modern neuroimaging is like asking an astronaut in the space shuttle to look out the window and judge how America is doing.

It is a sadness of growing older that some of us lose our ardent appreciation of what is new and different and difficult.

The ignorant hath an Eagles wings, and an Owles eyes. [The ignorant hath an eagle's wings and an owl's eyes.]

The man who has planned badly, if fortune is on his side, may have had a stroke of luck; but his plan was a bad one nonetheless.

I truly believe that when you've found the one you're searching for, you become a better version of yourself. You're better for it.

If you want to be a sharp thinker, be around sharp people.

America is a great country, and we've done a lot of good in the world. But we are a collection of people, not saints. We have our own sins to atone for.