The effect that different names and forms produce is an illusion, and so is reason, which is the creation of mind, when it is compared with the ultimate reality. Reality is above reason. When reason follows reality it is helpful, but when reality is covered under reason it is an illusion. The one who penetrates through the numerous covers of reason comes to the depth of knowledge, but the one who clings to the first reason he has touched remains there; for him there is no progress.