Mário de Sá-Carneiro was born to a wealthy family with a strong military tradition. His mother died in 1892 when he was two years old, and he was subsequently raised by his grandparents. He lived on a farm near Lisbon where he would spend most of his life. Sá-Carneiro started writing poems at the age of 12. By the age of 15, he had already translated several works by Victor Hugo. By 16, he had translated some works of Johann Wolfgang von Goethe and Friedrich Schiller. He began to write fiction in high school, partly due to his work as an actor. In 1911, he left for Coimbra, where he was admitted to law school, although he never progressed beyond his first year. However, he met a man who would soon become his closest friend, Fernando Pessoa, and who introduced him to the group of modernists of Lisbon.