Question: What is meant by: “However, in every desire of your soul, you may slaughter and eat meat…; the unclean and the clean may eat thereof, as of the deer, and as of the gazelle” (Deuteronomy 12:15)?
Answer: Meat symbolizes receiving the Light of Hochma into the real desire to receive—what a person consumes with his most egoistic desires—but in order to bestow. Deer and gazelle are animals that can be killed in other ways than domestic animals (for example, deer can be killed with a bow), while they nevertheless still remain kosher.
“Clean” is a person who is in a state of complete correction, and “unclean” is one who understands that he is not yet corrected, but still enters to be purified.
The Torah speaks only about people with an immense desire to become similar to the Creator and to see Him and the entire universe in its true condition themselves.
From KabTV’s “Secrets of the Eternal Book” 6/30/16