References – AN 7.21: At Sārandada 
“Contemplating the decline of Vesali, how can we distinguish saṃvega from sadness that has no purpose?” Answered by Ajahn Pasanno. [History/Indian Buddhism] [Spiritual urgency] [Depression] // [Principles of non-decline] [Naturalness]
Reference: “The Deathless Drum,” Chapter 9 of Rude Awakenings by Ajahn Sucitto and Nick Scott.
Sutta: AN 7.21: Seven principles of non-decline.
Comments by Ajahn Pasanno and Ajahn Pesalo about Buddhism relying upon principles rather than geographic location. [Dhamma] [Geography/India] [Visiting holy sites]
Western Disciples of the Thai Forest Tradition [2016], Session 36, Excerpt 2