Dark interiors

I suppose it's a half-full, half-empty phenomenon. What matters more, the dark or the light? Both I suppose; we wouldn't have one without the other. Brings to mind a favorite medieval hymn, Adam Lay ybounden:

Adam lay ybounden,

Bounden in a bond;

Four thousand winter,

Thought he not too long.

And all was for an apple,

An apple that he took.

As clerkes finden,

Written in their book.

Ne had the apple taken been,

The apple taken been,

Ne had never our ladie,

Abeen heav'ne queen.

Blessed be the time

That apple taken was,

Therefore we moun singen.

Deo gracias!