| 5 | |

| 6 | == Abstract == |

| 7 | Starting from |

| 8 | 1st principles and general assumptions Newton's law of gravitation is shown to arise naturally and unavoidably in a theory in which space |

| 9 | is emergent through a holographic scenario. Gravity is explained as an entropic |

| 10 | force caused by changes in the information associated with the positions of ma- |

| 11 | terial bodies. A relativistic generalization of the presented arguments directly |

| 12 | leads to the Einstein equations. When space is emergent even Newton's law of |

| 13 | inertia needs to be explained. The equivalence principle leads us to conclude |

| 14 | that it is actually this law of inertia whose origin is entropic. |

| 15 | |

| 16 | |