I believe climate change is real - and I believe we have to act to protect the climate as fast as we possibly can.

I haven't inherited the earth from my parents, I am borrowing it from my children.

It is deeply shocking and incomprehensible to me that despite volumes of documentation and living witnesses who can attest to the horrors of the Holocaust, there are still those who would deny it.

Any doctor will admit that any drug can have side effects, and that writing a prescription involves weighing the potential benefits against the risks.

Genuine dialogue, not rhetorical bomb-throwing, leads to progress.

Political differences will always generate a healthy debate, but over time the dialogue has become more hateful and at times violent.

There is no question that we must do more to secure our borders - but how we go about securing them is also important.

I've come to the conclusion that military style weapons really don't have any place in our society. We ought to reinstate the assault weapons ban that served us well for 10 years from 1994 to 2004.

Stem cells have the potential to be used to treat and better understand some of the world's most deadly and disabling diseases.

The new Congress needs to move quickly to strengthen the Army and Marines - not to send more troops to Iraq - but to rebuild our capacity to meet national security threats globally.

We really don't have a policy [on climate change]. There's a lot of rhetoric and not a lot of action.

When enter the whole new world, men will deal with new science.To embrace a new science, men need to get used to new wisdom.

Integrity is never given. It is a quality that can only be proven over time.

Learn to appreciate every moment of your life, stop thinking of the future too much, you have a choice to make a difference in your life at any time you wish.

All love is socioeconomic. It’s the gradients in status that make arousal possible.

My grandmother used to embarrass me more, when she would pick me up from school wearing a big fuzzy hat. I didn't like that.

Usually, about two years of work go into each illusion, whether it's big or small. Two years of work on each five-minute piece.

If there were no God, he would have to be invented.

Listen to your instincts and ignore everything else.

I didn't feel I had to prove anything more.

Ultimately, man should not ask what the meaning of his life is, but rather he must recognize that it is he who is asked.