One of the four lights over my vanity blew out today
The bulb doesn't look the way it used to look
It doesn't look the way it looked before the light
It is hardly noticeable, but once you spot it you can tell
It's a shade darker in one area; a little burnt patch from the light
It was the light that blew out, not the bulb
But now neither are useful

What's a light without its bulb -- the glass casing to hold it in?
A light without the bulb still shines
It shines too brightly though
Despite the high melting point, the tungsten filament can be extremely delicate
It needs its glass case

What is a bulb without a light -- that which makes it useful?
What is the purpose to an empty glass ball?
I suppose it can be beautiful, if viewed by the right person
But can it really be appreciated by most without the light?

One was delicate, it needed another to keep it from falling apart
One was empty, and needed another to fill it with light
Both needed each other

So am I the light or the bulb?
And which were you?