What is the greatest work of Benigno Aquino Sr?

Benigno Aquino Sr. is best known for his contributions to Philippine politics, particularly as a prominent opposition leader during the Dictatorship of Ferdinand Marcos. His greatest work is often considered his advocacy for democracy and social justice, which he championed through his writings and political activities. Aquino's efforts laid the groundwork for the eventual People Power Revolution in 1986, which restored democratic governance in the Philippines. His legacy continues to influence Filipino politics and the pursuit of democratic ideals.