[bad word] 
When you are studying any matter
Or considering any philosophy
Ask yourself only: what are the facts,
And what is the [bad word] that the facts bear out

Carl Sagan:
Science is more than a body of knowledge
It's a way of thinking
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 [bad word] 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 [bad word] 
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