Mass and potentials (field displacements) are forms of energy that all matter has. But matter itself isn't energy, it's either a particle or a body of particles; which immediately contradicts it as being a particle-state. In the standard model matter is defined by elementary or composite structures of fermions.
The only way to create fermion particle is through pair-production—in which case an anti-particle is created in the process—and the only way to destroy matter is through annihilation—which requires an interaction with an anti-particle.
Originally posted by Mindship
God particle/Higgs boson 'gives' matter mass.
Originally posted by MF DELPH
Can you have matter without mass?
Matter without rest mass wouldn't have any energy and so it would be impossible to detect or interact with.