This week’s guest of our Association’s traditional Friday talks was Prof. Dr. Abdullah Gündoğdu, a faculty member of Ankara University. On the occasion of the 100th anniversary of our Republic, Prof. Gündoğdu gave a lecture on ‘Thinking about the second century of the Republic’. We would like to thank Prof. Gündoğdu for his beautiful speeches, including the meaning of the establishment of the Republic of Turkey for the Turkish world.