A time will come when men will stretch out their eyes. They should see planets like our Earth.
Christopher Wren

Accordingly, since nothing prevents the earth from moving, I suggest that we should now consider also whether several motions suit it, so that it can be regarded as one of the planets. For, it is not the center of all the revolutions.
Nicolaus Copernicus

And then when I went to Chicago, that's when I had these outer space experiences and went to the other planets.
Sun Ra

As the scene of life would be more the cold emptiness of space than the warm, dense atmosphere of planets, the advantage of containing no organic material at all, so as to be independent of both these conditions, would be increasingly felt.
John Desmond Bernal

Astronomy teaches the correct use of the sun and the planets.
Stephen Leacock

During the winter my attention was attracted to the changes in the stars and planets in the sky.
Paul Nurse

For a long time, we've worked on detecting planets with whatever was at hand, making use of existing small telescopes or even amateur telescopes. It's time to move on to the next stage.
Andrew Gould

For the greater beauty of the instrument, the balls representing the planets are to be of considerable bigness; but so contrived, that they may be taken off at pleasure, and others, much smaller, and fitter for some purposes, put in their places.
David Rittenhouse

Good men are the stars, the planets of the ages wherein they live, and illustrate the times.
Ben Jonson

I am sorry to say that there is too much point to the wisecrack that life is extinct on other planets because their scientists were more advanced than ours.
John F. Kennedy

I believe that there may be intelligent life on other planets.
Pat Buckley

I believe that these extra-terrestrial vehicles and their crews are visiting this planet from other planets. Most astronauts were reluctant to discuss UFOs.
Gordon Cooper

I simply haven't the nerve to imagine a being, a force, a cause which keeps the planets revolving in their orbits and then suddenly stops in order to give me a bicycle with three speeds.
Quentin Crisp

I think anybody would have to be with out common sense to think there weren't aliens. There are billions of planets, and I am convinced Earth is not the only one that's inhabited. It would be quite an ego trip to think that. I think about it all the time.
Sabrina Lloyd

I used to think about how nice it would be to visit the planets. Of course, I didn't expect to see in my lifetime what has happened. I knew it would happen some day, but it came along faster than I at first thought.
Clyde Tombaugh

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.
Patrick Stewart

If we ever start communicating with living creatures from other planets, the number one priority is, how are you going to communicate information? Even between different cultures here on Earth, you get into communication problems.
Story Musgrave

If you see a whole thing - it seems that it's always beautiful. Planets, lives... But up close a world's all dirt and rocks. And day to day, life's a hard job, you get tired, you lose the pattern.
Ursula K. Le Guin

In so many and such important ways, then, do the planets bear witness to the earth's mobility.
Nicolaus Copernicus

It is not known precisely where angels dwell whether in the air, the void, or the planets. It has not been God's pleasure that we should be informed of their abode.
Voltaire