What began in deadly competition has helped us to see that global cooperation is the essential precondition for our survival. Travel is broadening. I….

It is the responsibility of scientists never to suppress knowledge, no matter how awkward that knowledge is, no matter how it may bother those in pow….

The Hindu religion is the only of the World's great faiths dedicated to the idea that the Cosmos itself undergoes an immense, indeed an infinite, num….

In the way that scepticism is sometimes applied to issues of public concern, there is a tendency to belittle, to condescend, to ignore the fact that,….

The understanding of the intent of the artist which I can achieve when high sometimes carries over to when I’m down. This is one of many human fronti….

Except in pure mathematics, nothing is known for certain (although much is certainly false)..

The vast distances that separate the stars are providential. Beings and worlds are quarantined from one another. The quarantine is lifted only for th….

The way to find out about our place in the universe is by examining the universe and by examining ourselves - without preconceptions, with as unbiase….

We are made of star stuff. For the most part, atoms heavier than hydrogen were created in the interiors of stars and then expelled into space to be i….

Absolute certainty will always elude us. We will always be mired in error. The most each generation can hope for is to reduce the error. . . ..

Our perceptions are fallible. We sometimes see what isn't there. We are prey to optical illusions. Occasionally we hallucinate. We are error-prone..

We live on a mote of dust suspended in a sunbeam.

The prediction of nuclear winter is drawn not, of course, from any direct experience with the consequences of global nuclear war, but rather from an ….

Who are we, if not measured by our impact on others? That’s who we are! We’re not who we say we are, we’re not who we want to be - we are the sum of ….

All of us cherish our beliefs. They are, to a degree, self-defining. When someone comes along who challenges our belief system as insufficiently well….

You can get into a habit of thought in which you enjoy making fun of all those other people who don't see things as clearly as you do. We have to gua….

We are rare and precious because we are alive, because we can think as well as we can. We are privileged to influence and perhaps control our future.….

Our ancestors lived out of doors. They were as familiar with the night sky as most of us are with our favorite television programs..

The immense distances to the stars and the galaxies mean that we see everything ins pace int he past, some as they were before the Earth came to be. ….

We are, in the most profound sense, children of the Cosmos..

Has there ever been a religion with the prophetic accuracy and reliability of science? . . . No other human institution comes close..