The world is beset by challenges including the ongoing danger of international terrorism, and the significant political and economic threats posed by factors such as the high levels of corporate and sovereign debt and persistent unemployment.

Mars is essentially in the same orbit. Mars is somewhat the same distance from the Sun, which is very important. We have seen pictures where there are canals, we believe, and water.

Vietnam is a jungle. You had jungle warfare. Kuwait, Iraq, Saudi Arabia, you have sand. [There is no need to worry about a protracted war because] from a historical basis, Middle East conflicts do not last a long time.

I should have caught the mistake on that spelling bee card. But as Mark Twain once said, `You should never trust a man who has only one way to spell a word'.

I have made good judgments in the past. I have made good judgments in the future.

We lead in exporting jobs.

It's not just enough to change the president if we want to change America.