1) Energy: The work things do in the universe (first law of thermodynamics)
2) Entropy: Information or things (bits) in the universe
3) Entanglement: Quantum state of things in the universe (i.e. 1 (yes) or 0 (No). Generates information in the universe.
4) Eternity (Now): The point at which things give us information. (Buddist Nirvana)