Juan Crisostomo Ibarra.
Initially thinking that it was simply a bad joke by those left behind, Father Salví recognizes the handwriting and confirms that it was indeed Ibarra’s. As people begin to panic, the lamp flickers. Father Irene tries to turn the wick up when Isagani, due to his undying love for Paulita, bursts in the room and throws the lamp into the river, sabotaging Simoun's plans. He escapes by diving into the river as guards chase after him. He later regrets his impulsive action because he had contradicted his own belief that he loved his nation more than Paulita and that the explosion and revolution could have fulfilled his ideals for Filipino society.