  A concise survey of the advanced unifying ideas of modern physics, namely,
spontaneous symmetry breaking, quasiaverages, quantum protectorate and
emergence was presented. The interrelation of the concepts of symmetry
breaking, quasiaverages and quantum protectorate was analyzed in the context of
quantum theory and statistical physics. The main aim of this analysis was to
demonstrate the connection and interrelation of these conceptual advances of
the many-body physics and to try to show explicitly that those concepts, though
different in details, have a certain common features. Some problems in the
field of statistical physics of complex materials and systems e.g. foundation
of the microscopic theory of magnetism and superconductivity were pointed in
relation to these ideas.
