Answer:
What is neither inside the house nor outside the house but a necessity for any home?
All about the house, with his lady he dances, yet he always works, and never romances.
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.
Describes universities like Harvard and can be poisonous.
What flies without wings?
You can always see it, but it's too far away to touch. Mountains rest on it, and at sea it surrounds you. What is it?