The brain is a very important organ in our body. It is the medium where Al Zahir [The Outer] and Al Batin [The Inner] meet. It is your throne, where you make your decisions to run this body. As you are making decisions, you are getting data from your outer with your senses, and you are getting data from your heart from the Divine Essence. This Divine Essence communication depends on your attainment of Sultani Ruh and Ruhani Ruh. When the connection is clear, you can get good transmission. When you are not aware of this connection, you are stupid because the transmission is not good. When you are aware of the connection, you are smart because the transmission is good.