Question: What is the difference between the wisdom of Kabbalah and other sciences?
Answer: You attain and establish all the other sciences by your five fictitious senses, while you attain and establish the wisdom of Kabbalah by a new sense, which you receive from Above and by which you explore the upper world (since it all exists only with regard to the created being).
The difference between the wisdom of our world (which includes all the sciences that have already been revealed by us and which are yet to be revealed) and the wisdom of Kabbalah is that in the science of Kabbalah you have a sense of bestowal and you can control and explore yourself, the spiritual world, Godliness, and this world.
On the other hand, in conventional science, which studies this world, there is no external perspective, no objective point of view from which you can see the world and yourself and see what is right and what is wrong and how subjective everything is. Of course everything is absolutely subjective with regard to your senses. If you had additional senses or a sixth finger, you would discover something new.
This means that the sciences of this world and studies in this world using the five senses a person has are very limited and are only intended to bring a person to such a development of his ego, of his desire to receive, that he should understand and realize that he cannot advance any further with the sense of receiving that he now has.
Question: So what is the sixth sense that a person acquires when he studies Kabbalah?
Answer: The sixth sense is that attribute of bestowal. If the Light shines on you and influences you, it gives you its attributes and then your receive the attribute of bestowal, which we simply call the sixth sense. It isn’t just another sense in addition to your corporeal senses.
The Light gives you an additional attribute in which you can see and feel what is external to the desire to receive, what is external to you.
From the 4th part of the Daily Kabbalah Lesson 12/14/14, Writing of Baal HaSulam