Bouvier was born at Grand-Lancy near Geneva, the youngest of three children. He grew up in "a Huguenot milieu, rigorous and enlightened at the same time, intellectually very open, but where the entire emotional aspect of existence was strictly monitored." He passed his childhood in a house where, in his words, "the paper-cutter counted for more than the bread-knife", a double reference to his librarian father ("one of the most amiable beings I should ever have met") and his mother, "the most mediocre cook west of Suez". He grew up indifferent to gastronomy and a hardy traveller as well as an avid reader. Between the ages of six and seven, he devoured Jules Verne, Curwood, Stevenson, Jack London and Fenimore Cooper. "At eight years, I traced with my thumbnail the course of the Yukon in the butter of my toast. Already waiting for the world: to grow up and clear off."