It appears that the ether elasticity theory unifies physics theories. Particles are superpositions of ether waves and reciprocally. Electromagnetism is the case where the ether is submitted to densities of couples of forces, this is generalized to the case where the ether is submitted to more general distribution of forces. The General Relativity and the ether theory explain the "strong nuclear interaction," the quantum mechanics, the electron spin, the fact that the General Relativity at the Newton approximation is identical to Maxwell's electromagnetism.