Who are we? Where do we come from? Why are we this way and not some other? What does it mean to be human? Are we capable, if need be, of fundamental change, or do the dead hands of forgotten…

Quote by Dr Carl Sagan

Topics: Dr Carl Sagan Quotes

That's here. That's home. That's us. On it everyone you love, everyone you know, everyone...

That's here. That's home. That's us. On it everyone you love, everyone you know, everyone...

The universe is not required to be in perfect harmony with human ambition.

The universe is not required to be in perfect harmony with human ambition.

You can't convince a believer of anything; for their belief is not based on evidence,...

You can't convince a believer of anything; for their belief is not based on evidence,...

Personally, I would be delighted if there were a life after death, especially if it...

Personally, I would be delighted if there were a life after death, especially if it...

It is of interest to note that while some dolphins are reported to have learned...

It is of interest to note that while some dolphins are reported to have learned...

I also wish that the Pledge of Allegiance were directed at the Constitution and the...

I also wish that the Pledge of Allegiance were directed at the Constitution and the...

I worry that, especially as the Millennium edges nearer, pseudo-science and superstition will seem year...

I worry that, especially as the Millennium edges nearer, pseudo-science and superstition will seem year...

Science is a way of thinking much more than it is a body of knowledge.

Science is a way of thinking much more than it is a body of knowledge.

Advances in medicine and agriculture have saved vastly more lives than have been lost in...

Advances in medicine and agriculture have saved vastly more lives than have been lost in...

When Kepler found his long-cherished belief did not agree with the most precise observation, he...

When Kepler found his long-cherished belief did not agree with the most precise observation, he...

It is far better to grasp the Universe as it really is than to persist...

It is far better to grasp the Universe as it really is than to persist...

All of the books in the world contain no more information than is broadcast as...

All of the books in the world contain no more information than is broadcast as...

If we long to believe that the stars rise and set for us, that we...

If we long to believe that the stars rise and set for us, that we...

You have to know the past to understand the present.

You have to know the past to understand the present.

Our loyalties are to the species and the planet. We speak for Earth. Our obligation...

Our loyalties are to the species and the planet. We speak for Earth. Our obligation...

For most of human history we have searched for our place in the cosmos. Who...

For most of human history we have searched for our place in the cosmos. Who...

Personally, I would be delighted if there were a life after death, especially if it...

Personally, I would be delighted if there were a life after death, especially if it...

We have not invaded anyone. We have not conquered anyone. We have not grabbed their...

We have not invaded anyone. We have not conquered anyone. We have not grabbed their...

The Internet is the most important single development in the history of human communication since...

The Internet is the most important single development in the history of human communication since...

History is the sum total of things that could have been avoided.

History is the sum total of things that could have been avoided.