Francis Lucille is a well-known Advaita teacher who has dedicated his life to sharing the teachings of non-duality. Non-duality, also known as Advaita Vedanta, is a philosophy that originated in ancient India and emphasizes the unity and oneness of all things. In this philosophy, the ultimate truth is that there is only one universal consciousness, and all apparent distinctions and separations are illusory.

According to Francis Lucille, the concept of non-duality can be understood in three key aspects: the absolute, the relative, and the practice. The absolute refers to the ultimate reality, which is pure consciousness or awareness. The relative refers to the world of appearances, which is constantly changing and perceived through the senses. The practice refers to the methods and techniques used to realize the absolute truth of non-duality.

Lucille explains that the absolute is the only reality, and everything else is a manifestation of it. This means that there is no separate self or individual consciousness, but rather a single universal consciousness that is present in all beings. He often uses the analogy of a movie screen to illustrate this concept. Just as a movie is projected onto a screen, the world of appearances is projected onto the absolute consciousness. The screen remains unchanged and unaffected by the movie, just as the absolute remains unchanged and unaffected by the world of appearances.

In the relative aspect, Lucille emphasizes the importance of understanding the illusory nature of the world. He explains that the world is constantly changing and therefore cannot be the ultimate reality. He also emphasizes that the ego, or the sense of a separate self, is also an illusion created by the mind. This illusion leads to suffering and confusion, as we identify with something that is not real. Lucille encourages his students to question their beliefs and perceptions in order to see through the illusion and realize the truth of non-duality.

In terms of practice, Lucille emphasizes the importance of self-inquiry and meditation. Self-inquiry involves questioning the nature of the self and investigating one's own experience to discover the truth of non-duality. Meditation helps to quiet the mind and allows one to experience the underlying consciousness that is always present. Lucille also emphasizes the importance of living in the present moment and being fully present in all experiences, rather than being lost in thoughts and perceptions.

In conclusion, Francis Lucille explains the concept of non-duality in Advaita as the understanding that there is only one universal consciousness and all apparent distinctions and separations are illusory. He emphasizes the absolute, relative, and practice aspects of non-duality and encourages his students to question their beliefs, meditate, and live in the present moment in order to realize the truth of non-duality. Through his teachings, Lucille guides his students towards a deeper understanding of the oneness and unity of all things.