Answer: The Book of Zohar says that the whole world is found within us, which is eventually what a person discovers. A person cannot talk about what is outside of him because everything is within his senses.
Even though I am portraying images as existing in front of me, they actually exist inside me, in my imagination, in my consciousness. A person constructs an image within himself and relates to it; in other words, he exists in the model he builds himself. If he had different senses, he would construct a completely different image.
From the Kabbalah Lesson in Russian 8/28/16