 A fourth possibility lies in the ongoing negation of whatever is said about X ad infinitum in an infinite “unsaying” or taking back of what has been said (Sells 1994, chap. 1). An example of unsaying can be found in the endless negations in some Zen Buddhist meditative exercises. Since the truth about reality “as it is” lies outside of our conceptualizations of it, we cannot say that truth, only experience it. Hence, when we say, “Reality is not reality” (i.e., that reality as it is differs from what we take it to be conceptually), we must also say that “Reality is not not-reality” to counter an affirmation of its nature as not-reality. We must then negate the latter by saying “Reality is neither not-reality nor not-not-reality.” And so on. (See Nhat Hanh, 1994, chap. 5.) But classical mystics typically affirmed, as Shankara did with Brahman, that a reality lay behind all negations. So too, Eckhart prayed to God to make him free of God (Eckhart 2009, 424, 531) — it is not a denial of God but an attempt to get to the Godhead behind God and creation.