  Based on Lorentz invariance and Born reciprocity invariance, the canonical
quantization of Special Relativity (SR) is shown to provide a unified origin
for: i) the complex vector space formulation of Quantum Mechanics (QM); ii) the
momentum and space commutation relations and the corresponding representations;
iii) the Dirac Hamiltonian in the formulation of Relativistic Quantum Mechanics
(RQM); iv) the existence of a self adjoint Time Operator that circumvents
Pauli's objection.
