Dr. Carl Sagan

You have to know the past to understand the present.

You have to know the past to understand the present.

That's here. That's home. That's us. On it everyone you love, everyone you know, everyone you ever heard of, every read more

That's here. That's home. That's us. On it everyone you love, everyone you know, everyone you ever heard of, every human being who ever was, lived out their lives. The aggregate of our joy and suffering, thousands of confident religions, ideologies, and economic doctrines, every hunter and forager, every hero and coward, every creator and destroyer of civilization, every king and peasant, every young couple in love, every mother and father, hopeful child, inventor and explorer, every teacher of morals, every corrupt politician, every 'superstar,' every 'supreme leader,' every saint and sinner in the history of our species lived there - on a mote of dust suspended in a sunbeam.

I worry that, especially as the Millennium edges nearer, pseudo-science and superstition will seem year by year more tempting, the read more

I worry that, especially as the Millennium edges nearer, pseudo-science and superstition will seem year by year more tempting, the siren song of unreason more sonorous and attractive.

It is far better to grasp the Universe as it really is than to persist in delusion, however satisfying and read more

It is far better to grasp the Universe as it really is than to persist in delusion, however satisfying and reassuring.

There are many hypotheses in science which are wrong. That's perfectly all right; they're the aperture to finding out what's read more

There are many hypotheses in science which are wrong. That's perfectly all right; they're the aperture to finding out what's right. Science is a self-correcting process. To be accepted, new ideas must survive the most rigorous standards of evidence and scrutiny.