The late great Carl Sagan, gatekeeper of scientific credibility


“You can’t convince a believer of anything, for their belief is not based on evidence, it’s based on a deep-seated need to believe” – – Carl Sagan

In order to understand who Carl Sagan was, let’s take a look at some of his famous quotes.

Carl Sagan’s famous quotes


Here is a great tribute to Carl Sagan by the Smithsonian Institute.  Click and read:


Among the many books he wrote, here is my favorite one:

THE DEMON-HAUNTED WORLD:  Science as a Candle in the Dark


In one of his last interviews he gives some insights into pseudo-science, mysticism, religion, UFOs……watch the following interview on YouTube:

Carl Sagan’s last interview with Charlie Rose

Here is a quote from an excellent review of Carl Sagan‘s acclaimed book, THE DEMON-HAUNTED WORLD:  Science as a Candle in the Dark:

“How can we make intelligent decisions about our increasingly technology-driven lives if we don’t understand the difference between the myths of pseudoscience and the testable hypotheses of science?

Pulitzer Prize-winning author and distinguished astronomer Carl Sagan argues that scientific thinking is critical not only to the pursuit of truth but to the very well-being of our democratic institutions.

Casting a wide net through history and culture, Sagan examines and authoritatively debunks such celebrated fallacies of the past as witchcraft, faith healing, demons, and UFOs.

And yet, disturbingly, in today’s so-called information age, pseudoscience is burgeoning with stories of alien abduction, channeling past lives, and communal hallucinations commanding growing attention and respect.

As Sagan demonstrates with lucid eloquence, the siren song of unreason is not just a cultural wrong turn but a dangerous plunge into darkness that threatens our most basic freedoms.”

Here is Carl Sagan’s interview, specifically about UFOs…..his thoughts are still relevant, even today:

Carl Sagan interview on UFOs    (1966)

Today, many scientists of world renown, such as astrophysicist Dr. Neil deGrasse Tyson, carry the torch of Carl Sagan




E-mail =


One thought on “The late great Carl Sagan, gatekeeper of scientific credibility

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s