Unlike scientists, spiritual practitioners don’t use sophisticated research instruments. They use their inner wisdom—their luminosity—to look into things. Once we get rid of our grasping, our fear and anger, our notions and concepts, then we have a very bright instrument with which to experience reality free from dualistic notions of birth and death, being and nonbeing, coming and going, the same or different. The practice of mindfulness, concentration, and insight can purify our mind and make it into a powerful instrument with which we can look deeply into the nature of reality.