qnli question: Where was Horace-Benedict de Saussure born? sentence: Born in Geneva, Saussure was enamored with the mountains from an early age; he left a law career to become a naturalist and spent many years trekking through the Bernese Oberland, the Savoy, the Piedmont and Valais, studying the glaciers and the geology, as he became an early proponent of the theory of rock upheaval.