[Theodor Kocher and César Roux]

96 letters addressed by César Roux (1857-1934), the most prestigious surgeon from the Canton of Vaud, to his fiancée, Anna Begoune, native of Russia, allow us to evoke Roux's training in Kocher's department of surgery. The letters shed light on Roux's relationship with Theodor Kocher, whom he compares successively with Billroth and von Volkmann.