The coronavirus epidemic is closing schools. A teacher from St. Petersburg and his students continue their lessons remotely. Forced isolation makes them almost equal. He no longer stands in front of them while they are sitting. They no longer respond by raising their hand. He may not be distracted by their questions. They can leave the class without asking permission. But they need to be able to understand him. And he must learn a new way of thinking. His past holds an experience of forty years. His future holds them, his students.