Emptiness is not something sacred in which to believe.
It is an emptying: a letting go of the fixations and compulsions that lock one into a tight cell of self that seems to exist in detached isolation from the turbulent flux of life.
Stephen Batchelor
Mindfulbalance 
Nicely defined..
“Unborn emptiness has let go of the extremes of being and nonbeing, Thus it is both the center itself and the central path. Emptiness is the track on which the centered person moves.”
—Tsongkhapa