Answer:
Born in the past, but only lives in the present. Sometimes false, always personal.
What always comes into the house through the keyhole?
It goes up and down the stairs without moving.
What is born on the ground but floats to the sky, to be returned back again from the clouds up high?
Brothers and sisters I have none but this man's father is my father's son. Who is the man?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.