Baal HaSulam, “The Essence of the Wisdom of Kabbalah,”: However, it is quite sufficient, for this is the rule: “All that is measured and extracted from His Providence so as to be realized into the nature of Creation, is completely satisfactory.” Similarly, one cannot wish for a sixth finger on one hand, because the five fingers are quite sufficient.
We are arranged so that it is enough for us to have five fingers on our hand. Would it bother us if we had a sixth finger? For example, a monkey has a special finger to grasp branches. It would be nice for us to have it too. Yet, I do not need it anymore! I do not feel any need for one more finger. It is the same everywhere, in all my senses I do not feel that I am missing something.
Telescopes and microscopes are only quantitative enlargements of sensory organs, their expansion. But if I use all my senses, I do not feel that I am lacking an additional sensory organ. I can say that I would like to hear ultra and infra sonic waves like dolphins. But all this comes from nature, this is just an expansion and not new sensory organs.
Thus, everything we have in us does not cause any feelings of lack, it is quite enough for us, and therefore we are not developing further. The only way to develop is to rise above our senses: not how much I will receive in my sensory organs, but how much I can work with them in the direction of bestowal.
Here I specifically start to feel not myself, but the world around me, I rise above myself. Here is a completely different science about the world—the wisdom of Kabbalah.
Question: What if five fingers are enough for me? I just live like that.
Answer: When I live in what is enough for me, it is the animate level. If I want to understand the source of everything that is happening, then nothing other than Kabbalah will help.
From KabTV’s “Fundamentals of Kabbalah,” 9/15/19