Introduction. What is pneumatology? ; Why pneumatology? ; Statement of the problem ; Purpose of the research ; Methodology of the research ; Previous researches ; Structure of the research -- A paradigm shift : brief survey of reformer's pneumatology. Introduction ; Reformation defined ; A milieu to the new paradigm ; Pneumatology of the right wing reformers ; Pneumatology of the left wing reformers ; Summary -- Pneumatology of Karl Barth (1886-1968). Introduction ; The Sitz-im-Leben of Karl Barth ; Pneumatology of Karl Barth ; Summary -- Pneumatology of Jürgen Moltmann (1926- ). Introduction ; The Sitz-im-Leben of Jürgen Moltmann ; Pneumatology of Jürgen Moltmann ; Summary -- Pneumatology of Wolfhart Pannenberg (1928- ). Introduction ; The Sitz-Im-Leben of Wolfhart Pannenberg ; Pneumatology of Wolfhart Pannenberg ; Summary -- Come creator spirit : towards a theology of the Holy Spirit. Introduction ; Pneumatological approaches ; A comparison of pneumatological approaches ; Summary.