The requirements for knowledge and belief
in science are far different than those required in religion.
Scientists are very careful with their use of the terms "to
know" and "to believe" -- and the word "faith"
is anathema. Religion has no such strict interpretations and often
use the three terms interchangeably.
It only took me a semester of college biology
to have a problem with my preacher saying things like, "Know
this, when you die, you'll either go to Heaven or Hell", OK, preacher, you might scare me into one or tempt me into the other, but you can't make me "know" that I'll land in either one. Then he would ask me if I "believed" this. Of course I said yes, rationalizing my surrender by letting the word "believe" dilute "know" down enough to be palatable. But that didn't fix the dissonance in
my mind. It only grew worse the further I got into science. Common
origin, natural selection, speciation, genetics, geology. anthropology, -- on and on
-- contradicted almost every thing I had been conditioned to believe in the Baptist church.
I finally came to the conclusion that I had to make a choice. I had
to dump either science or religion. I dumped religion. At least I
tried damn hard. But the dissonance remained -- until a few years
ago. So what cleared things up? My definitions of the words
"knowledge", "belief" and "faith". Here
they are.
- Knowledge requires empirical,
non-disputable evidence. Example: Neil Armstrong knew he walked on
the moon on July 20, 1969. I don't know this, but he did.
- Belief requires objective evidence
that can be proven beyond a reasonable doubt. Example: I believe that Armstrong walked on the moon. I have no choice but
to go where the evidence takes me.
- Faith does not
require a minimum amount of evidence. Example: Neil Armstrong had a private conversation with God while on the moon. There is no objective evidence for this, but I can have faith it happened -- if I choose to.
Thus, I'm at peace. As long as there is
the unknown, I can choose to hope for anything I want, even if the
only evidence I have is 100% subjective. I call it “faith”.
It's my choice. I can have “faith” in Heaven even if I don't have
enough evidence to know or even believe in it. However, I don't need faith
to accept evolution. I have sufficient objective evidence. See? No
more dissonance.
So, if any of my religious friends out
there ever hear me say, “I don't believe in xyz”, you'll know
that I still might have faith in it. Or if my atheist friends out
there hear me say, “I have faith in xyz”, you'll know I still may
not believe in it. Hope that clears things up.