Life Possibility Quotes

Each day that we live, we're taking in new information, ideas, concepts, experiences, and sensations. We need to consciously stand guard at the doors of our minds to make sure that whatever we're allowing to enter will cause our lives to be enriched, that the experiences we pursue will add to our stockpile of possibility.

For if we allow that human life is always guided by reason, we destroy the premise that life is possible at all.

In the universe of possibilities that exist for life, we've shown that it is a very easy possibility for life as we know it to include silicon in organic molecules. And once you can do it somewhere in the universe, it's probably being done.

...suddenly you hit on something that the student really responds to, you can see the eyes open and the complexion change. The life possibility has opened there. All you can say to yourself is, "I hope this child hangs on to that."

[Answering whether there was life in other worlds, he said there probably was.] After all, there's plenty of unearthly looking things moving around in my refrigerator, so there's always a chance of life springing up almost anywhere.

Most Jupiter-sized planets orbit the mother star in a highly elliptical orbit. This means they will often cross the orbit of any Earth-like planet and fling it into outer space, making life impossible. But our Jupiter travels in a near-perfect circular orbit, preventing a collision with any Earth-like planet, making life possible.

The thing that sets Mars apart is that it is the one planet that is enough like Earth that you can imagine life possibly once having taken hold there.

All we can say is that with hundreds of thousands of nebulae, each containing thousands of millions of suns, the odds are enormous that there must be immense numbers which possess planets whose circumstances would not render life impossible. If we are sufficiently self-centered and choose to deny that any of these support life, no one can prove we are wrong. But I, for one, am not so immensely impressed by the success we are making of our civilization here that I am prepared to think we are the only spot in this immense universe which contains living, thinking creatures, or that we are the highest type of mental and physical development which has ever appeared in the vast compass of space and time.

There are only certain intervals of time when life of any sort is possible in an expanding universe and we can practise astronomy only during that habitable time interval in cosmic history.