Ramana Maharshi

http://www.sriramanamaharshi.org/

https://www.goodreads.com/author/quotes/201908.Ramana_Maharshi?page=2

adi shankara

https://www.google.com/search?safe=active&hl=en&site=imghp&tbm=isch&source=hp&biw=1600&bih=770&q=adi+shankara+quotes&oq=adi+sha&gs_l=img.1.4.0l10.1939.14739.0.23233.8.8.0.0.0.0.221.887.3j2j2.7.0....0...1ac.1.64.img..1.7.885.0..0i10k1.sqez941rQ80#imgrc=P4Vg2u1XIuOR6M:

អភិធម្ម សានសុជាត

https://www.youtube.com/playlist?list=PLCYIwXZHWqkIW5SJtgmOZ9s4BmiBxN-oY

BBC document on nature

https://app.curiositystream.com/video/1571/?utm_campaign=V-Prospecting-Combo&utm_medium=cpc&utm_source=youtube&gclid=Cj0KEQjwzpfHBRC1iIaL78Ol-eIBEiQAdZPVKoiQiFvIXqhjNwwGmGmV9-OHmtYvpvUwDkHiW7BrU4AaAsZP8P8HAQ