The Source is said to be a physical manifestation of "life, death, rebirth". Humans are said to covet the Source because a little bit of the very same light is inside every man—"but they always want more". While humans are incapable of taking the light, their attempts to do so could "put it out. And if the light goes out here... it goes out everywhere."
Hmm I wonder if Marsellus Wallace was ever stranded in a mysterious island.

May be I'm overreacting, but I found this episode really cheesy. The light is all good and everything, but something felt a bit off... :-s
May be I'm just tired :-s
oh well...