Nice, Parsifal. The only real thing that I would change is to take the word "debate" out and work in "discuss". The reason I say this is because I think that people might think this is just a debate forum and lose the fact that we are open minded.
I recommend something along the lines of, "we welcome people of all beliefs to discuss any concerns they have have about our theories with us".
Maybe beliefs is not the right word. It kind of implies religion. I don't know.