At an early age, he became a critic of the monastic rule in the country (the Spanish friars).
He was suspended at the University of Santo Tomas and jailed in 1869 after he and the parish priest quarrelled over exorbitant baptismal fees.
In the 1880s, he expanded his anti-friar movement from Malolos to Manila.
He went to Spain in 1888 after an order of banishment was issued against him.
Twelve months after his arrival in Barcelona, he succeeded López Jaena as editor of the La Solidaridad (Solidarity).
Publication of the newspaper stopped in 1895 due to lack of funds.
Losing hope in reforms, he grew favorable of a revolution against Spain.
He was on his way home in 1896 when he contracted tuberculosis in Barcelona.
He later died in a public hospital and was buried in a pauper's grave.On November 30, 1997, the Technical Committee of the National Heroes Committee, created through Executive Order No.
5 by former President Fidel Ramos, recommended del Pilar along with the eight Filipino historical figures to be National Heroes.
The recommendations were submitted to Department of Education Secretary Ricardo T.
Gloria on November 22, 1995.
No action has been taken for these recommended historical figures.
In 2009, this issue was revisited in one of the proceedings of the 14th Congress.