Locked Heal Madness: Jake Starts Down the Dark Path

YODA: A Jedi's strength flows from the Force. But beware of
the dark side. Anger...fear...aggression. The dark side of the Force
are they. Easily they flow, quick to join you in a fight. If once you
start down the dark path, forever will it dominate your destiny,
consume you it will, as it did Obi-Wan's apprentice.

LUKE: Vader. Is the dark side stronger?

YODA: No...no...no. Quicker, easier, more seductive.

LUKE: But how am I to know the good side from the bad?

YODA: You will know. When you are calm, at peace.