Comenius returned to Leszno for a third time in 1654, but his stay was short lived as the Swedes invaded Poland. Seen as a traitor who helped the Swedes in the past, Comenius was again a fugitive. Polish forces besieged Leszno and burned it down, along with Comenius’ manuscripts. Comenius was able to escape with his family to Amsterdam, where he spent the rest of his life writing tirelessly, publishing forty-three works. His main wish was to convince nations to live in harmony, publishing his hopes in the General Consultation on the Improvement of Human Affairs. As another war broke out, this time between the Netherlands and England, Comenius never saw his dreams realized. At the end of his life, Dutch painter Rembrandt van Rijn portrayed his likeness in his painting, A Portrait of an Old Man. This year, as we remember the great pedagogue on the 350th anniversary of his death, Comenius remains a symbol of the Czech nation. His birthday is celebrated as Teachers’ Day in the Czech Republic and universities honor his name around the world. Moreover, UNESCO awards the Comenius Medal to individuals who have greatly influenced education.