The terrorists do not understand America. The American people do not falter under threat, and we will not allow our future to be determined by car bombers and assassins.

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.

Do not follow where the path may lead. Go instead where there is no path and leave a trail.

Pure driving, pure racing, that´s what makes me happy.

In high school, my sister went out with the captain of the chess team. My parents loved him... They figured that any guy that took hours to make a move was okay with them.

If our brains were simple enough to be understood, we wouldn't be smart enough to understand them.

This world in arms is not spending money alone. It is spending the sweat of its laborers, the genius of its scientists, the hopes of its children.

A perfectionist has to take his time.

When a poor person dies of hunger it has not happened because God did not take care of him or her. It has happened because neither you nor I wanted to give that person what he or she needed.

I wouldn't doubt it if the CIA is behind Alcoholics Anonymous.

Chemistry is a hard thing. I don't think you can force it, and it doesn't necessarily mean that you have to have great chemistry outside of work. It's just something that sparks on screen or doesn't.

I go to the real world, not the Internet.