Inner Tranquillity is a Mental Power!
In what sense is calm a power? In the 1st jhāna this mental calm does not
waver even when attacked by the 5 mental hindrances, thus is calm a power!
In the 2nd jhāna this serenity does not flicker by any thoughts or thinking,
thus is calm a power... In the subtle mental sphere of neither perception nor
non-perception, this tranquil composure does not hesitate when faced with
void empty nothingness, thus is calm a power! Such silenced imperturbability
can neither waver, nor vacillate, nor hesitate in any unstable indecisiveness
despite being provoked by agitation, confusion, distraction and perturbation,
therefore is calmness a power. Such is the power of calm: The calm power!
More on this Serene Calm (Samatha) =Tranquil Ease:
Forest Bliss, Calm, Calm_and_Insight, The_Tranquil_One,
Breathing_Calm_and_Insight, Silenced, Forest_Bliss2