Answer: A person has to feel it by himself on himself. This is the reason that the wisdom of Kabbalah is called the secret wisdom; it is impossible to convey it in an abstract, theoretical, verbal manner. You can only teach a person to reveal it inside him and then he will be able to understand what this wisdom is.
There are no secrets in the wisdom of Kabbalah. The secret is only the fact that it is concealed from our current senses and is revealed by each one according to his level of correction. It is very simple! In our world, for example, we don’t give a small child sharp instruments, things that could be dangerous for him, we make sure he doesn’t get hurt, or doesn’t drop anything on himself.
The wisdom of Kabbalah is about even sharper and more dangerous objects and forces. Therefore an intentional “blackout” was created so that we wouldn’t be able to touch them. Imagine you exist in a dark cloud and only if you work properly will this cloud gradually begin to fade, once in one place and then in another etc., but only according to the distance and the direction you can operate without harming yourself and others.
From the Kabbalah Lesson in Russian 10/11/15