Turing Award: "For the basic idea of the emergence of object-oriented programming, through their design of programming languages Simula I and Simula 67." Collection of this article opens with a brief biography and bibliography remembered Ole-Johan Dahl's life and work, as well asa paper he wrote titled: "Birth of Object-Orientation:. In the language Simula" In accordance with the scope of Ole-Johan Dahl and the title of the book, then goods are centered around object-orientation and formal methods.