Whether you think that you can, or that you can't, you are usually right.

Whether you think that you can, or that you can't, you are usually right.

The world is so empty if one thinks only of mountains, rivers and cities; but to know someone here and read more

The world is so empty if one thinks only of mountains, rivers and cities; but to know someone here and there who thinks and feels with us, and though distant, is close to us in spirit - this makes the earth for us an inhabited garden.

There is only one corner of the universe you can be certain of improving, and that's your own self.

There is only one corner of the universe you can be certain of improving, and that's your own self.

We simply do not understand our place in the universe and have not the courage to admit it

We simply do not understand our place in the universe and have not the courage to admit it

I'm worried that the universe will soon need replacing. It's not holding a charge.

I'm worried that the universe will soon need replacing. It's not holding a charge.

The most beautiful things in the universe are the starry heavens above us and the feeling of duty within us.

The most beautiful things in the universe are the starry heavens above us and the feeling of duty within us.

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

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

Our sun is one of 100 billion stars in our galaxy. Our galaxy is one of billions of galaxies populating read more

Our sun is one of 100 billion stars in our galaxy. Our galaxy is one of billions of galaxies populating the universe. It would be the height of presumption to think that we are the only living things in that enormous immensity.

We are an impossibility in an impossible universe.

We are an impossibility in an impossible universe.