On the occasion of the 350th anniversary of the publication of the Opera didactica omnia (Amsterdam 1657), a collection of Comenius´s educational works, Leibniz-Sozietät, Berlin, held a one-day symposium (Comenius´s grandson was one of the builders of the Leibniz Society). An International Comeniological Conference, supported by the Ministry of Education, Youth and Sports of the Czech Republic and the Pedagogical Museum J. A. Comenius in Prague, is under preparation. and Jaroslav Pánek.