From the hidden store of the heart to the words on the tongue, five teachings trace the path.
Citta: Heart-mind
Heart and mind are a single word to the Buddha. Treasure sounds like coins locked in a chest, yet the store this good man draws from is simply the standing condition of his mind, whatever he has let it become. Keep that inner room swept and warm and goodness walks out its door; let it grow cold and cluttered and something harder comes through instead.
Mūla: Root
Good and evil each grow from roots, three apiece: grasping, hatred, and confusion, or their cooling into generosity, kindness, and clear sight. A good man and an evil man differ the way a sweet tree and a bitter one differ, down at the root you cannot see. The fruit on the branch only reports what the root already settled.
Anusaya: Latent tendencies
"Abundance" points to a store built up slowly, the pile of leanings lying quiet in the heart until something calls them out. Like embers under gray ash they look cold, then a stray word fans them and the old heat is back. The evil man keeps these tendencies in place; the good man is good because patient practice has raked them out, so what he brings forth is clean.
Kamma: Action and its fruit
Every deed takes the flavor of the heart it came from, so good brings forth good and evil brings forth evil as surely as a seed grows only into its own kind. You cannot sow thistles and gather figs; the harvest reports what went into the ground. Each thing a person brings forth drops back as a seed in that same soil, so the treasure deepens the way it already leans.
Vacī-kamma: Verbal action
Speech is a deed, one of three doors, standing beside what the hands do and what the mind turns over in private. So the mouth is a spout: whatever fills the heart to the brim runs out of it first, and the words tell everyone what has been stored. Listen to a person when they are tired or angry and you are reading the treasure straight off the tongue.