References – AN 1.41-50: A Spike 
“Do you have any advice about how to hold a particularly strong “fighting spirit” teaching, like Ajahn Dtun?” Answered by Ajahn Pasanno. [Fierce/direct teaching] [Teaching Dhamma ] [Ajahn Dtun] // [Culture/Thailand] [Ardency] [Right Effort] [Restlessness and worry] [Heedfulness] [Discernment] [Goodwill]
Sutta: AN 1.49: The mind is radiant.
Quote: “If you invite visitors into your home [the mind] and they just make a mess, then you want to close the door on them before they come in. You can’t be too polite.” — Ajahn Chah. [Ajahn Chah] [Similes] [Unwholesome Roots]
Our Roots in the Thai Forest Tradition [2014], Session 18, Excerpt 4
“‘Luminous is the mind.’ Is the luminous mind conditioned or unconditioned? If unconditioned, then it’s Nirvana. If conditioned/impermanent, then Nirvana is beyond the mind? Yet it can be known by the mind?” Answered by Ajahn Pasanno. [Nature of mind] [Unconditioned] [Nibbāna]
Sutta: AN 1.49