Many of us think, at times, pictorially (via mental pictures) and emotionally. And to a large extent, many of us think via internal words and sentences (i.e., verbally). This verbiage is called “inner speech,” and it allegedly involves one talking to oneself. Is there a separate self or separate “center” that is truly separate from this inner speech? One does not think so. Regarding inner speech, the perceiver is the perceived; fabricating (mentally) a separate observer is a waste of energy and causes needless separation. Too many of us look at things — such as fear and such as nature — via mere separation. (We were taught to perceive things, internally and externally, via separation.) (By the way, not having the illusion of a separate, central self does not negate eternity/the eternal; on the contrary, it invites it.)
We think, internally, in a multitude of ways; most of us are constantly chattering, internally, about something. This inner chattering largely consists of words and sequences of words. Words are symbolic and are always fragmentary, always limited. (One often speaks internally with a virtual copy of one’s own voice.) Stillness — which allows for wholeness — is imperative. But one cannot “make” stillness occur. True stillness is not merely an effect brought about by some mechanistic, calculated cause. True stillness comes with holistic perception beyond mere cause and effect reactions. This is why you cannot decide to meditate. You cannot say you will meditate for 30 minutes in the morning and 30 minutes in the evening. This is why “practicing” mindfulness is ludicrous. True meditation occurs naturally; it is uninvited and is not the mere result of some premeditated cause or desire. (You cannot “know” that you are meditating, by the way.)
The watery pool of the holistic, reflective mind (in stillness) will mirror the truth. An agitated mind, full of clatter and turmoil, reflects nothing.