The passage discusses the Buddhist concept of Nirvana and how it can be achieved and confirmed through meditation. It states: 1) Through meditation practice and reducing mental impurities, one will reach a stage where they see the world and their thoughts as mere pictures that form and disappear moment to moment. 2) At this stage, they understand that the world they see is just a collection of ever-changing pictures with no substance. This leads to a strong desire to find a place with no pictures at all, which is the realization of Nirvana. 3) With further practice, there will come a moment where they can stop the arising of pictures completely and see a place beyond pictures - the vision