"My guiding principle as president has been..." - Quote by Barack Obama

“If we're going to prevent large parts of this Earth from becoming not only inhospitable but uninhabitable in our lifetimes, we're going to have to keep some fossil fuels in the ground rather than burn them and release more dangerous pollution into the sky.”

“The actions of those in power can have enormous consequences - a price that they themselves almost never have to pay.”

“There are some who question the scale of our ambitions, who suggest that our system cannot tolerate too many big plans. Their memories are short, for they have forgotten what this country has already done, what free men and women can achieve when imagination is joined to common purpose, and necessity to courage.”

“And now, of course this is another thing I didn't count on, that now as the governor of the state of California, I am selling California worldwide. You see that? Selling.”

“The key to becoming a more efficient leader isn't checking off all the items on your to-do list each day. It's in forming the habit of prioritizing your time so that you are accomplishing your most important goals in an efficient manner.”

“U.S. President Theodore Roosevelt has been described as founder of the Bull Moose Party, the man who led his troops up San Juan Hill in the Spanish-American War, a big game hunter, family man, civic servant and a host of other things.”

“Great ambition is the passion of a great character. Those endowed with it may perform very good or very bad acts. All depends on the principles which direct them.”

“Is it less dishonest to do what is wrong because it is not expressly prohibited by written law? Let us hope our moral principles are not yet in that stage of degeneracy.”

“You want to be commander-in-chief? You can start by standing up for the men and women who wear the uniform of the United States, even when it's not politically convenient.”