stone

A  broken   A L T A R,  Lord,  thy  servant  reares,
Made  of  a  heart,  and  cemented  with   teares:
Whose  parts  are as  thy  hand did frame;
No workmans tool hath touch’d the same.
A    H E A R T     alone
Is    such    a     stone,
As      nothing      but
Thy  pow’r doth  cut.
Wherefore each part
Of   my   hard   heart
Meets  in  this  frame,
To  praise thy  Name;
That,   if   I   chance   to   hold   my   peace,
These stones to praise thee may not cease.
O  let  thy   blessed   S A C  R  I  F  I C E   be  mine,
And    sanctifie   this   A  L  T  A  R   to   be   thine.

-george herbert

I think I've learned a thing or two about broken hearts in my life. 

(Mind you, hearts don't always have to be in love to be broken)

But perhaps this is the most important part of life: only in the breaking down are we shaped into altars.