Man is beginning to explore the galaxy. But how much remains undone on earth?

Peace is not unity in similarity but unity in diversity, in the comparison and conciliation of differences.

If what you have done yesterday still looks big to you. You haven't done much today.

I believe in the cosmos. All of us are linked to the cosmos. So nature is my god. To me, nature is sacred. Trees are my temples and forests are my cathedrals. Being at one with nature.

If not me, who? And if not now, when?

It seems that the most important thing about Reagan was his anti-Communism and his reputation as a hawk who saw the Soviet Union as an 'evil empire.'

When future generations judge those who came before them on environmental issues, they may conclude "they didn't know": let us not go down in history as the generations who knew, but didn't care

It is my firm belief that the infinite and uncontrollable fury of nuclear weapons should never be held in the hands of any mere mortal ever again, for any reason.

It is better to discuss things, to argue and engage in polemics than make perfidious plans of mutual destruction.

We had 10 years after the Cold War to build a new world order and yet we squandered them. The United States cannot tolerate anyone acting independently. Every US president has to have a war.

You cannot go to sleep with one form of economic system and wake up the next morning with another.

I love Japan. I love the collision of the modern and ancient worlds coming together in that place. It's so high-tech and cool.

We need not fear the judgement of history. Who, after all, speaks today of the extermination of the Armenians?

Unified party control of the organs of government has proved no panacea.

There's nothing like a love song to give you a good laugh.

Love seizes us suddenly, without giving warning, and our disposition or our weakness favors the surprise; one look, one glance, from the fair fixes and determines us.

Since I arrived at CNN, it has grown into one of the largest and most trusted news organizations in the world.

Action without thought is empty. Thought without action is blind.

Rehabilitate the germs that cause bad breath.

I was always very interested in science, and I knew that for me, science was a better long-term career than tennis.

I worship impersonal Nature, which is neither "good" or "bad", and who knows neither love nor hatred.