They separated in 1914, with Marić taking the boys and returning to Zurich from Berlin. They divorced in 1919; that year Einstein married again. When he received the Nobel Prize in 1921, he transferred the money to Marić, chiefly to support their sons; she had access to the interest. In 1930, their second son Eduard had a breakdown at about age 20 and was diagnosed with schizophrenia. With expenses mounting by the late 1930s for his institutional care, Marić sold two of the three houses she and Einstein had purchased. He made regular contributions to his sons' care, which he continued after emigrating to the United States with his second wife (Elsa, his first cousin).