Answer: The Creator.
We have to understand what is meant by the question whether there is a Creator or not. We have to ask with regard to whom He exists. Can you say now that He exists for you? No.
A person can speak about the Creator, but it doesn’t mean that He exists, and so we say that the Creator exists or doesn’t exist only with regard to the person who attains Him or doesn’t attain Him.
From the Kabbalah Lesson in Russian 5/8/16