“Kabbalah speaks of four worlds corresponding to different levels or dimensions of reality, thus expanding our concept of health and nutrition far beyond the physical or even emotional and mental planes. Within this concept, a fourth element is the world of Emanation (Atzilut). This is the world from which energy flows across the upper worlds and empties into the material world, the world of Action (Asiyyah). The fourth world is therefore the point of origin for the flow of vital energy coming from the Divine Source. This flow in turn is stored on the spiritual plane, which allows it to enter the mental plane, which in turn supplies the emotional plane. Finally, from the emotional level the flow is conducted to the physical plane, fueling the body for action and exchange, a phenomenon known as existence.
If the world of Emanation alone were the conveyor of all flows of energy, the law of exchange would be subverted. According to the Kabbalah, the energy flow goes both ways, returning from the physical, material world to the One that is the pure source of all energy.
The Kabbalah sees all forms of exchange among living beings and the environment, including eating, in terms of an interactive process among different worlds. Such a process links earth and heaven, matter and energy, action and intention. Living beings are responsible as intermediaries between these realms, as long as their inner or existential world is centered exactly where heaven and earth meet. Regarding this inner world, the Talmud states: ‘This is the world where heaven and earth kiss’.”
— Hilton Bonder (Kabbalah of Food)
“All men seek peace first of all with themselves. That is necessary,
because we do not naturally find rest even in our own being. We have to
learn to commune with ourselves before we can communicate with other men
and with God. A man who is not at peace with himself necessarily
projects his interior fighting into the society of those he lives with,
and spreads a contagion of conflict all around him. Even when he tries
to do good to others his efforts are hopeless, since he does not know
how to do good to himself.”