Particle physics at the turn of the millennium -- The instruments of production -- Quantum theory -- Quantum field theory -- Gauge symmetry and Gauge theories -- The standard model -- Triumph of the standard model -- Problems of the standard model -- Beyond the standard model -- New insights in quantum field theory and mathematics -- String theory : history -- String theory and supersymmetry : an evaluation -- On beauty and difficulty -- Is superstring theory science? -- The Bogdanov affair -- The only game in town : the power and the glory of string theory -- The landscape of string theory -- Other points of view