"For the subnuclear world, the ordinary mirror has to be replaced by an extended mirror that carries out three reflections simultaneously—switching particle to antiparticle and vice-versa, changing left to right and vice-versa, and reversing the . ...[R]espectively C (for charge), P (for parity) and T (for time). The CPT mirror changes Alice into a mirror-image Anti-Alice going backward in time."
January 1, 1970