Answer:
We are few to the wise; We are abundant to the drunken; We can calm the beast and are precious to the child; We can devour the heart, without piercing the skin
It doesn't live within a house, nor does it live without. Most will use it when they come in, and again when they go out.
An iron horse with a flaxen tail. The faster the horse runs, the shorter his tail becomes.
Always wax, yet always wane: I melt, succumbed to the flame. Lighting darkness, with fate unblest, I soon devolve to shapeless mess.
Gold in a leather bag, swinging on a tree, money after honey in its time. Ills of a scurvy crew cured by the sea, reason in its season but no rhyme.
I’m grown from darkness but shine with a pale light. Very round I am and always a lady's delight.