I briefly describe how the world of elementary particles and their interactions looks like to physicists at the turn of the Millenium. Various symmetries played an important role in studying the microworld and guided theorists in their attempts to understand the underlying interactions. The combined Charge Conjugation and Parity (CP) symmetry seemed very robust, but was discovered in 1964 to be not exact in decays of neutral K mesons. Hadrons containing a heavy b quark are very promising in studying the subtle details of fundamental interactions. Their decays will shed light on the origin of CP or T violation in Nature. The experiments started recently at B factories are expected to discover CP violation in B mesons during this year, or to refute an important element of the Standard Model.