There can be only one!  

That's a reference to the movie Highlander.

Why Highlander? Because the quickening has begun!

Apparantly, the quickening is a term that can be applied to spring, cause the sap starts to rise in the trees, and new growth begins.

Seems it's from Celtic/pagan or something...

IMBOLC : Celtic name for Candlemas. This sabbat is celebrated around Feb 02. It is a festival of lights that celebrates the 'quickening" and the resurgence of life in the ground

Facts, full of, this morning, I am. Hrumph!

</yoda>