"You have to go on foot," the innkeeper at the Gasthaus Edelweiß had told me, "otherwise you won't find him." The Professor, he said, loved solitude; he liked to sit by the lake over there—on the stones near Chastè—or walk up the path toward Lej Marsch. I wasn't the first person to go looking for him, he added, but the Professor received no one without prior notice.