All of the books in the world contain no more information than is broadcast as video in a single large American city in a single year. Not all bits have equal value.

For small creatures such as we the vastness is bearable only through love.

Extraordinary claims require extraordinary proof.

Imagination will often carry us to worlds that never were. But without it, we go nowhere.

Imagination will often carry us to worlds that never were. But without it we go nowhere.

Who are we? We find that we live on an insignificant planet of a humdrum star lost in a galaxy tucked away in some forgotten corner of a universe in which there are far more galaxies than people.

Science is not only compatible with spirituality; it is a profound source of spirituality.

When you make the finding yourself - even if you're the last person on Earth to see the light - you'll never forget it.

Absence of evidence is not evidence of absence.

We've arranged a civilization in which most crucial elements profoundly depend on science and technology.

If you wish to make an apple pie from scratch, you must first invent the universe.

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

A celibate clergy is an especially good idea, because it tends to suppress any hereditary propensity toward fanaticism.

One glance at a book and you hear the voice of another person, perhaps someone dead for 1,000 years. To read is to voyage through time.

In every country, we should be teaching our children the scientific method and the reasons for a Bill of Rights. With it comes a certain decency, humility and community spirit. In the demon-haunted world that we inhabit by virtue of being human, this may be all that stands between us and the enveloping darkness.

If we long to believe that the stars rise and set for us, that we are the reason there is a Universe, does science do us a disservice in deflating our conceits?