Carl Sagan

"What is called for is an exquisite balance between two conflicting needs: the most skeptical scrutiny of all hypotheses that are served up to us and at the same time a great openness to new ideas. If you are only skeptical, then no new ideas make it through to you. On the other hand, if you are open to the point of gullibility and have not an ounce of skeptical sense in you, then you cannot distinguish useful ideas from the worthless ones."

8 likes

Source: The Burden of Skepticism. The Skeptical Inquirer, Volume 12, Issue 1, www.csicop.org. Fall 1987.

About the author

Carl Sagan

Carl Sagan

Astronomer, Astrophysicist

Carl Sagan was an influential astronomer and science communicator, known for his work 'Cosmos' and advocacy for scientific literacy.

All quotes by Carl Sagan →

Same author

More quotes by Carl Sagan

See all →
Carl Sagan Astronomer, Astrophysicist

"It is far better to grasp the universe as it really is than to persist in delusion, however satisfying and reassuring."

Read quote
Carl Sagan Astronomer, Astrophysicist

"One of the saddest lessons of history is this: If we’ve been bamboozled long enough, we tend to reject any evidence of the bamboozle. We’re no longer interested in finding out the truth. The bamboozle has captured us. It’s simply too painful to acknowledge, even to ourselves, that we’ve been taken. Once you give a charlatan power over you, you almost never get it back."

Read quote
Carl Sagan Astronomer, Astrophysicist

"The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pies were made in the interiors of collapsing stars. We are made of starstuff."

Read quote