On the one hand, Kabbalah is the science of understanding nature, its inner layer. But, on the other hand, neither our senses nor the most modern devices can detect this reality. That is, we have no opportunity to feel the Upper World which Kabbalah speaks of. In the physical world, we invent devices to strengthen our senses and gain the ability to expand our perception to the micro and macro worlds. Thanks to those instruments, we were able to see the smallest atom, feel the heat from distant glowing stars and even count the number of neurons that formed a memory cell for the word “home” in our brain. In order to feel the spiritual world, we also need a special device. But you can only invent it inside yourself by changing your state of sensitivity and acquiring properties that are opposite to our world - the properties of bestowal and love.