Lord Buddha said that we should practise Asubha sanna (perception of the non-beautiful). Does it mean that we have to let go Subha sanna (perception of the beautiful) completely ? Are there anything that is Subha in this world? As I know, The world is a Asubha thing. We can not find any subha thing in this world at all. So anything that is not related to the world is Subha. Buddha, Dhamma and Sangha help us to get rid of this world. That means they are Subha things. The conclusion is that we shouldn't have any Subha sanna towards anything other than Triple jems. Am I right?

Due to impermanance of everything, Are there anything to be happy or sad about ? Even about **dhamma** ? If something seems like to be happy, there are some reasons to not to be happy. 1. It is impermanant for sure. but also, 2. That **happiness make sadness in the future (future includes next lives)** (I need to be sure about this sententce, please mention about this in your answer) Are enlightened people happy ? Or neither happy nor sad ?

There's an excellent simile in the Theravada non canonical literature explaining the difference between piti and sukha in the first 3 jhanas, reminiscent of the lotus pond in this sutta MN 40. (citation?) As I remember it: - Piti = you're in a desert, dying of thirst, as you're approaching oasis/pond, you realize there's water in the distance, that you're not going to die, and you're going to drink that water soon. The thrill and excitement of that is piti. - sukha = you've arrived at the oasis/pond, now you're drinking the water. The pleasure from actually drinking the water is sukha. Three questions: 1. what is the citation of that piti sukha simile for the 4 jhanas from? 2. might this sutta, MN 40, be what inspired that simile for jhana piti/sukha differentiation? Should the words piti sukha appear in MN 40 lotus pond, but got lost in transmission? 3. What does the MN 40 lotus pond simile mean on its own terms, just for this sutta? What are the 4 directions referring to? MN 40 excerpt here: [MN 40: what is the meaning of the lotus pond simile?](https://notesonthedhamma.blogspot.com/2019/09/mn-40-what-is-meaning-of-lotus-pond.html)