The question is not so much whether there is life on Mars as whether it will continue to be possible to live on Earth

Freedom is the alone unoriginated birthright of man, and belongs to him by force of his humanity.

Freedom can never be comprehended, nor even can insight into it be gained.

Act so that the maxim of your act could be made the principle of a universal law.

Give me matter, and I will construct a world out of it!

The infinitude of creation is great enough to make a world, or a Milky Way of worlds, look in comparison with it what a flower or an insect does in comparison with the Earth.

If it were possible for us to have so deep an insight into a man's character as shown both in inner and in outer actions, that every, even the least, incentive to these actions and all external occasions which affect them were so known to us that his future conduct could be predicted with as great a certainty as the occurrence of a solar or lunar eclipse, we could nevertheless still assert that the man is free.