Avadhuta Gita is a Hindu text based on the principles of Advaita Vedanta (nondualism). The singer of the Avadhuta Gita is Dattatreya, an Avadhuta, and according to the Nath Sampradaya, the work was heard and transcribed one of Dattatreya's disciples, Swam Kartikeya.(Sanskrit: gita)
Absence of thought does not mean a blank. There must be someone to be aware of that blank. Knowledge and ignorance pertain only to the mind and are in duality, but the Self is beyond them both. It is pure Light. There is no need for one Self to see another. There are no two selves. What is not the Self is mere non-self and cannot see the Self. The Self has no sight or hearing; it lies beyond them, all alone, as pure Consciousness. ~ Ramana Maharshi.