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We would fight not for the political future of a distant city, rather for principles whose destruction would ruin the possibility of peace and security for the peoples of the earth.

Let both sides seek to invoke the wonders of science instead of its terrors. Together let us explore the stars, conquer the deserts, eradicate disease, tap the ocean depths, and encourage the arts and commerce.

Set religion free, and a new humanity will begin.

We should attempt to bring nature, houses, and human beings together in a higher unity.

With our love, we could save the world.

We could have human intelligence in orbit around Mars, building things there.

What is needed is the intelligent management of Earth's resources. If we really wish to put an end to our ongoing international and social problems, we must eventually declare Earth and all of its resources as the common heritage of all the world's people.

I would like to see us get this place right first before we have the arrogance to put significantly flawed civilizations out onto other planets, even though they may be utterly uninhabited.

In order for us to have a future that's exciting and inspiring, it has to be one where we're a space-bearing civilization.

Let us develop the resources of our land, call forth its powers, build up its institutions, promote all its great interests, and see whether we also, in our day and generation, may not perform something worthy to be remembered.