Bertrand Russell:
When you are studying any matter
Or considering any philosophy
Ask yourself only: what are the facts,
And what is the truth that the facts bear out

Carl Sagan:
Science is more than a body of knowledge
It's a way of thinking
A way of skeptically interrogating the universe

If we are not able to ask skeptical questions
To be skeptical of those in authority
Then we're up for grabs

Michael Shermer:
In all of science we're looking for a balance
between data and theory

Sam Harris:
You don't have to delude yourself
With Iron Age fairy tales

Carolyn Porco:
The same spiritual fulfillment
That people find in religion
Can be found in science
By coming to know, if you will, the mind of God

Lawrence Krauss:
The real world, as it actually is,
Is not evil, it's remarkable
And the way to understand the physical world
is to use science

Richard Dawkins:
There is a new wave of reason
Sweeping across America, Britain, Europe, Australia
South America, the Middle East and Africa
There is a new wave of reason
Where superstition had a firm hold

Phil Plait:
Teach a man to reason
And he'll think for a lifetime

Sagan:
Cosmology brings us face to face with the deepest mysteries
With questions that were once treated only
in religion and myth

The desire to be connected with the cosmos
Reflects a profound reality
But we are connected; not in the trivial ways
That Astrology promises, but in the deepest ways

Richard Feynman:
I can't believe the special stories that have been made up
About our relationship to the universe at large
Look at what's out there; it isn't in proportion

Russell:
Never let yourself be diverted
By what you wish to believe
But look only and surely
At what are the facts

James Randi:
Enjoy the fantasy, the fun, the stories
But make sure that there's a clear sharp line
Drawn on the floor
To do otherwise is to embrace madness