““Nagarjuna's verse 46]-is extensively taught. [Madhyamaka or emptiness] means being without characteristics that define true reality. It [means] to be unarisen, since it is neither existent nor nonexistent. It is neither something existent that has already arisen nor something nonexistent that is not suitable to arise. It is free from being demonstrable through words and expressions by the [various] ways of speech. This [emptiness] has the characteristic that space as its suitable example, nonconceptual wisdom (the mind of enlightenment), and enlightenment that clearly realizes all phenomena in an unmistaken way are not two [that is, not different]. The meaning of this is as follows: Conventionally, space exists, but ultimately it is unobservable. Likewise, enlightenment exists on the seeming level, but ultimately it does not exist. Also the nonconceptual mind of enlightenment can be expressed in conventional terms, but it is without nature when analyzed. Therefore, the characteristics of these [three] are not different.””