Both Catholics and Protestants have failed our people by mystifying the very notion of mysticism. The word itself has become relegated to a "misty" and distant realm that implies it is only available to very few and something not to be trusted, much less attractive or desirable. For me, the word "mysticism" simply means experiential knowledge of spiritual things, as opposed to book knowledge, secondhand knowledge, or even church knowledge.
— Fr. Richard Rohr