I've been in a debate online with another Christian of a different tradition (I'm Catholic, he is Baptist, I think) regarding mysticism, specifically Christian mysticism. He stated that mysticism is inherently pagan and non-Christian, and attempts to use the term Christian mysticism are essentially modern attempts to take a pagan concept and "Christianize" it. I believe that it is not necessarily unChristian, if it is done in a Christian manner. Christian mysticism and pagan mysticism may not be the same thing in practice, though similar in concept, where a Christian is experiencing a fuller communion with Christ but through Christ working in him, and a pagan using ritual to try and attain some deeper sense of the supernatural.
Is there such a thing as Christian mysticism? I've heard the term "mystic" used to describe some saints of the Church. Is this a fluke or is it legitimate? Or is it referring to something other than mysticism?