If the means were available, we could trace our ancestry - yours and mine - back to the first blob of life-like material that came into being on the planet.

Before Man goes to the stars he should learn how to live on Earth .

If the means were available, we could trace our ancestry - yours and mine - back to the first blob of life-like material that came into being on the planet.

Here lies one from a distant star, but the soil is not alien to him, for in death he belongs to the universe.

The chain of life runs smoothly from one generation to the next and none of the links stand out except here and there a link one sees by accident.

When I talk of the purpose of life, I am thinking not only of human life, but of all life on Earth and of the life which must exist upon other planets throughout the universe.

I did not want to move. For I had the feeling that this was a place, once seen, that could not be seen again. If I left and then came back, it would not be the same; no matter how many times I might return to this particular spot the place and feeling would never be the same, something would be lost or something would be added, and there never would exist again, through all eternity, all the integrated factors that made it what it was in this magic moment.