You don't just give the executive branch unlimited resources, unlimited power. Our founders were very concerned about too much power being invested in any one, in any branch. The balance of power is fundamental to our system.

Government can ensure that we share schools and streets and lunch counters and buses and elevators and theaters, but let us never forget that only God can give us the power to love each other and to respect each other and to share life, liberty and the pursuit of happiness.

The most important thing about global warming is this. Whether humans are responsible for the bulk of climate change is going to be left to the scientists, but it's all of our responsibility to leave this planet in better shape for the future generations than we found it.

We had so many different presidents, including Jefferson, Jackson, Lincoln - there were other founders like Hamilton, Adams - who made it very clear that the courts can't make a law. The Constitution is expressly clear that that's a power reserved to Congress.

Pro-life includes improving life after birth.

Sometimes, people mistake fire in the belly for too much pepperoni pizza the night before. They make a great speech and people come up to them and tell them, "You could be president." And the next thing you know, they're running, not because they really ought to or have any shot at doing it, but because they have, you know, a handful of people that tell them they are looking at the next president.

A leader is the one who can outline the broad vision and the direction, and say here's where we are going to go, here's why we need to go there, and here's how we are going to get there. A manager is the one who actually gets up under the hood and tunes the carburetor.