"Some may still deny the overwhelming judgment..." - Quote by Barack Obama

“We should never hesitate to use military force, and I will not, as president, in order to keep the American people safe. But we have to use our military wisely. And we did not use our military wisely in Iraq.”

“American politics is always somewhat fluid. In this age of social media, it means that voters can swing back and forth.”

“Historically - when you look at how America has evolved, typically we make progress on race relations in fits and starts. We make some progress, and then there's maybe some slippage.”

“California will not wait for our federal government to take strong action on global warming. We won't wait for the federal government. We will move forward because we know it's the right thing to do. We will lead on this issue and we will get other western states involved. I think there's not great leadership from the federal government when it comes to protecting the environment.”

“The human race likes to give itself airs. One good volcano can produce more greenhouse gases in a year than the human race has in its entire history.”

“The hard truth is carbon pollution has built up in our atmosphere for decades now. And even if we Americans do our part, the planet will slowly keep warming for some time to come.”

“Even in Europe a change has sensibly taken place in the mind of man. Science has liberated the ideas of those who read and reflect, and the American example has kindled feelings of right in the people. An insurrection has consequently begun of science talents and courage against rank and birth, which have fallen into contempt. It has failed in its first effort, because the mobs of the cities, the instrument used for its accomplishment, debased by ignorance, poverty and vice, could not be restrained to rational action. But the world will soon recover from the panic of this first catastrophe.”

“There will one day spring from the brain of science a machine or force so fearful in its potentialities, so absolutely terrifying, that even man, the fighter, who will dare torture and death in order to inflict torture and death, will be appalled, and so abandon war forever.”

“I am not to blame for putting forward, in the course of my work on science, any general rule derived from a previous conclusion.”