Symmetries and Einstein

After a brief survey of the influence of Einstein on current particle physics, fundamental symmetry between particles and antiparticles is discussed. The existence of antiparticles is an important outcome of special relativity and quantum mechanics and the disappearance of antiparticles from the present universe is one of the mysteries in Big Bang cosmology based on the Einstein equation. Remarkable progress has been made recently in the studies of the violation of symmetry between particles and antiparticles with the use of a new type of accelerator. Some of their achievements are reported