The mind is beyond expression, thought and conceptualization, because it’s empty. However, there are phenomena and appearance.

The objects you cling to in this waking reality are like a dream, but if you don't investigate the nature of this dream, you remain drawn as if there is something here. Examining them, you discover that these objects have no true existence and are just like space. A practitioner who understands that phenomena have no inherent existence and are space-like must then examine himself to find out if he has an individual self. Then it will be discovered that there is not really an examiner either.

Gyatrul Rinpoche.