You have countries like India that have tried to help untouchables, with essentially affirmative-action programs, but it hasn't fundamentally changed the structure of their societies.

There are certain things we can only do together. There are certain things only a union can do. Only a union could harness the courage of our pioneers to settle the American west, which is why President Abraham Lincoln passed a Homestead Act giving a tract of land to anyone seeking a stake in our growing economy.

We will not apologise for our way of life.

My administration doesn’t have any secrets, and from now on, neither will you.

I know that the politics around trade can be very difficult - especially in an election year.

I favor legalizing same-sex marriages, and would fight efforts to prohibit such marriages.

America ranks 21st when it comes to math education. We rank 25th when it comes to science. We used to be number one in the proportion of college graduates. We now rank ninth. And at an age where knowledge, skills, are the determinant of how successful we're going to be, unless we reverse that we're going to keep slipping behind economically to a lot of other countries.