This is very deep and powerful learning!

May I elaborate or generalize the 4 key concepts?

- สุ ย่อมาจาก สุตะ แปลว่า ฟัง

We may include not only 'listen' but also 'look', 'read', 'follow' (the process)

- จิ ย่อมาจาก จินตะ แปลว่า คิด

We may 'think' as 'imagine' or draw mental pictures; think as 'recall' from memory; and think as 'create' another mental object and/or stuructures and process.

- ปุ ย่อมาจาก ปุจฉา แปลว่า ถาม

We should question what we do not understand/know clearly. We can ask for facts (if they are complete; true; up-to-date) ask for links (in strucrures if they are oneway; permanent; one-to-one). We can ask for processes (if the methods or recipes are achievable; repeatable; 'optimal'). And we can ask for principles or bases or "why" of the ways we do things including asking questions!.

- ลิ ย่อมาจาก ลิขิต แปลว่า จด/เขียน

We should record (or write down) what we have learned so that we can pass what we have learned to others. We must record only 'facts' verifiable facts (at least true and complete in our mind). Recording rubbish only begets more rubbish and not only useless but also wasting others' and world resources.

;-)