Khenpo Tsültrim Gyamtso Rinpoche 

The Play of Mind
Whether the mind is aware or unaware of its own nature, that nature does not change. It is always empty of the imaginary and dependent natures. However, as long as the non-conceptual, non-arising Wisdom Mind is not recognized, the dependent nature seems to arise, creating the dream manifestations that the confused mind imagines to comprise an outer world interacting with inner minds. From this confusion the idea of self and other, attachment and aversion, and all the other concepts and emotional disturbances arise. It is just like getting totally confused and involved in a dream. Once the awakened consciousness returns, however, one quickly sees dreams as mere manifestations of the play of mind, and whether they subside immediately or not, they do not disturb the mind at all.

Khenpo Tsultrim Gyamtso Rinpoche, Progressive Stages of Meditation on Emptiness, Prajna Editions 2001, p. 77.