Senator Morales was born in Moncada, Tarlac on August 25, 1885.
He obtained his Bachelor of Arts degree from the Liceo de Manila. He finished his Bachelor of Laws degree from Esculea de Derecho and was admitted to the Bar in 1908.
Senator Morales entered politics when he was elected for two consecutive terms in the House of Representatives from the first district of Tarlac from 1916 to 1919 and from 1919 to 1912 served as a minority floor leader. He was elected Senator from 1926 to 1928 and was a delegate to the Constitutional Convention representing Tarlac in 1934.