[1] He studied at the College of San Alberto Magno, obtaining a Bachelor of Arts degree in 1896 and the University of Santo Tomas, B.A., in the same year.

After he passed the Philippine Bar examination on September 7, 1914, he established his own law office and engaged in the active practice of his profession.

As Senator during the period 1928–1931, he was Chairman of the Committees on Civil Service and National Enterprise, and member of the following committees: Finance, Public Works and Communication, Appointments, Justice, Municipal and Provincial Governments, Election and Privileges, City of Manila, Commerce and Industry, Labor and Immigration.

During the 9th Legislative Assembly, he was chairman of the Committee of Justice and member of the following committees: Finance, Public Works and Communication, Appointments, Public Instruction, External Relations, Banks Corporations and Franchise, Commerce and Industry, City of Manila, Municipal and Provincial Governments, Labor and Immigration, Civil Service and Library.

He was appointed Secretary of National Defense on November 1, 1939, during the presidency of Manuel Quezon pursuant to the enactment of Commonwealth Act No.