Career
An austere, humanist and liberal man, he is considered one of the most brilliant Spanish intellectuals of the 20th century. He also stands out for his elegant literary style. He was the son of a jurist, but his mother died when he was three years old.
He grew up as an avid reader and learned English, French and German.
From a very early age, he was in contact with the intellectual circles of the time from his father"s friendships with José María de Pereda, Alfredo Vicenti, Marcelino Menéndez Pelayo and Benito Perez Galdós, among others Marañón accompanied young king Alfonso XIII during the royal visit to the backward region of Las Hurdes in 1922.
He specialized in endocrinology and became professor of that specialty in Complutense University in Madrid since 1931. Marañón founded the Institute of Medical Pathology and was president of the Institute of Experimental Endocrinology and the Centre of Biological Research.
He contributed to establish a relationship between psychology and endocrinology.