Answer:
What goes through a door but never goes in and never comes out?
What travels around the world without leaving the corner?
They're big and yet so far away, We see them at the end of day. They're small and they're above. We see them when we close our eyes, Each time we are in love.
Never ahead, ever behind, yet flying swiftly pastΝΎ For a child I last forever, for adults I'm gone too fast.
I'm the source of all emotion, but I'm caged in a white prison.
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.