Any science in the world studies connections between parts of reality, each on its level of reality—physiological, psychological, biological, and physical—and so there is psychology, biology, physics, etc.
The wisdom of Kabbalah does not deal with these levels, but with the most basic level, that is the desire contained in each part of creation, only in different forms, on different levels, and in different sizes.
Therefore, Kabbalah is considered the main science. It conducts the same scientific research as any other science, derives formulas, studies creation and the actions of the Creator, clarifies our place in creation, and measures creation in relation to the Creator. All this presupposes a serious scientific study. All other sciences do not give such exact definitions.
In fact, creation is very complicated. Although it would seem that it is based on a very simple formula: the Creator’s desire to bestow equals the creature’s desire to receive.
However, this is not a simple equality because it includes a coefficient that should equalize the desire to receive and the desire to bestow: the Creator’s desire to bestow equals C multiplied by the creature’s desire to receive.
This coefficient includes within itself a restriction, a screen (Masach), and Reflected Light. We need to implement this equation all the time. Therefore, I must know the desire to receive, the desire to bestow, and my coefficient.
So I always study the Creator’s desire to bestow. I aspire to and equate myself with Him. According to these parameters, I determine my state and place in creation. In this way, I explore all of creation. Without this, it is impossible to relate to the Creator correctly, and I need to reach the degree of love for Him. The coefficient is my intention for the sake of bestowal. Without it, I cannot contact the Creator.
From the 1st part of the Daily Kabbalah Lesson 3/1/18, Writings of Rabash