This is my maiden voyage. My first speech since I was the president of the United States and I couldn't think of a better place to give it than Calgary, Canada.

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.

Count every second of your life as the greatest blessing.

I have that hypocrisy of a parent in that I'm like, 'Come on, you've got to toughen up at the same time let me take care of that for you.

In the end, we shall recognize our song and sing it well. You may feel a little warbly at the moment, but so have all the great singers. Just keep singing and you’ll find your way home.

I learned about Chinese ceramics and African sculptures, I aired my scanty knowledge of the French Impressionists, and I prospered.

I am a lefty, though I bat right-handed... When I was a kid I pitched, played first, outfield and shortstop as well. Now it's mainly softball with some friends.

They jumped on us. They were the aggressor. They had us on our heels from the beginning.

Plenty of people are onto the emptiness but it takes real guts to see the hopelessness.

I really don't like coke. It's so gross and so dark. It's like, what are you, from the '90s? Ew.

In war, three-quarters turns on personal character and relations; the balance of manpower and materials counts only for the remaining quarter.

We need only look to our Navajo Code Talkers during World War II to see the value that Native languages bring not only to their culture, but to the security of all Americans.