1,131 Quotes by Carl Sagan

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

They (i. e., the Pythagoreans ) did not advocate the free confrontation of conflicting points of view. Instead, like all orthodox religions, they practised a rigidity that prevented them from correcting their errors.

The words "question" and "quest" are cognates. Only through inquiry can we discover truth.

One of the greatest gifts adults can give - to their offspring and to their society - is to read to children.

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.

If we're capable of conjuring up terrifying monsters in childhood, why shouldn't some of us, at least on occasion, be able to fantasize something similar, something truly horrifying, a shared delusion, as adults?

The neurochemistry of the brain is astonishingly busy, the circuitry of a machine more wonderful than any devised by humans. But there is no evidence that its functioning is due to anything more than the 10 14 neural connections that build an elegant architecture of consciousness.

The cosmos is within us. We are made of star stuff

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. Telescopes are time machines.