Quotes from Carl Sagan

Are we willing to tolerate ignorance and complacency in matters that affect the entire human family?

Once upon a time, we soared into the Solar System. For a few years. Then we hurried back. Why? What happened? What was 'Apollo' really about?

The chance of receiving a signal from a civilization exactly as advanced as we are should be minuscule. If they were even a little behind us, they would lack the technological capability to communicate with us at all. So the most likely signal would come from a civilization much more advanced.

Whatever the reason we first mustered the _Apollo_ program, however mired it was in Cold War nationalism and the instruments of death, the inescapable recognition of the unity and fragility of the Earth is its clear and luminous dividend, the unexpected final gift of _Apollo_. What began in deadly competition has helped us to see that global cooperation is the essential precondition for our survival. Travel is broadening. It's time to hit the road again.

If chimpanzees have consciousness, if they are capable of abstractions, do they not have what until now has been described as human rights? How smart does a chimpanzee have to be before killing him constitutes murder? What further properties must he show before religious missionaries must consider him worthy of attempts at conversion?

there is no deeper religious feeling than the feeling for the natural world. I wouldn't separate the world of nature from the religious instinct...I would not even object to saying that the sense of awe before the grandeur of nature is itself a religious experience.

These are some of the things that hydrogen atoms do, given fifteen billion years of cosmic evolution.

We are a way for the cosmos to know itself.

If we know only our own side of the argument, we hardly know even that; it becomes stale, soon learned only by rote, untested, a pallid and lifeless truth.

All the explanations proposed seem to be only partly satisfactory. They range from massive climatic change to mammalian predation to the extinction of a plant with apparent laxative properties, in which case the dinosaurs died of constipation.

Dear Friend, Just a line to show that I am alive & kicking and going grand. It's a treat.

If you grow up in a household where there are books, where you are read to, where parents, siblings, aunts, uncles, and cousins read for their own pleasure, naturally you learn to read. If no one close to you takes joy in reading, where is the evidence that it's worth the effort?