"To see nothing is to perceive the Way, and to understand nothing is to know the Dharma, because seeing is neither seeing nor not seeing and because understanding is neither understanding nor not understanding"

This quote by Bodhidharma talks to the concept of knowledge and the course to achieving it. He is recommending that in order to really understand the Dharma, one need to have the ability to look beyond the physical world and its constraints. To "see nothing" is to be able to look beyond the physical and view the Way, or the path to enlightenment. To "understand nothing" is to know the Dharma, or the teachings of Buddhism. This is since seeing and comprehending are not necessarily the exact same thing. Seeing is not always seeing, and understanding is not necessarily understanding. In order to truly comprehend the Dharma, one must be able to look beyond the real world and its constraints. This quote talks to the idea that enlightenment is not something that can be achieved through physical methods, but rather through spiritual understanding.