Why: goodness attaches one to happiness, passion to action, and ignorance, veiling knowledge, attaches one to negligence, summarizing each quality's characteristic pull in a single compact line before moving into how they interact.

In life: it's useful to have this compact, three-line summary memorized, since it gives you a quick diagnostic to run through during any given day, which pull is currently strongest right now.

Teaching: memorize this compact three-line summary and use it as an actual quick diagnostic during your day, noticing which specific pull, toward happiness, toward action, toward negligence, currently has the upper hand.