Baal HaSulam, “600,000 Souls”: Indeed, the whole is found within each item, since in the end, all the souls will unite into one discernment, returning to their spiritual root. Hence, all the miracles and wonders and all the journeys they had travelled throughout the world during the 6,000 years should be experienced by each soul. The good soul draws to itself from all the discernments of Kedusha before it and after it; and the evil soul does to the contrary.
The “evil soul” doesn’t aspire to connect with others, either over time or in certain cases, and so it becomes a “cancerous tumor” that only wants to eat its surroundings.
This is very much like what happens in the biological body. For there each cell is connected with all the other cells in the body. And if this connection is normal, it provides for the health of the body. Accordingly, each “good soul” like a healthy cell, strives to achieve universal unity, whereas the evil soul, which is not corrected, like a diseased cell, according to its nature, distances itself from everyone and wants to exploit others for its own benefit.
In this state, a person sits alone and seeks personal benefit (↓↓), in this he embodies the opposite of love, which is hatred. He loves others just like he loves fish for dinner.
The next higher level is the still one (↓). But he doesn’t act at the expense of others and becomes a state of Hafetz Hesed with a minus sign. Let the whole world burn and this doesn’t matter to him. This is called indifference.
On the next higher level (↑), a person wants good for others but doesn’t do anything about this . He simply wishes everyone well, and is Hafetz Hesed, a pure intention.
And finally, on the highest level, is a person who is connected with others (↑↑). This is love, intention, and action.
From the 3rd part of the Daily Kabbalah Lesson 10/10/13, Writings of Baal HaSulam