TRENTON, N.J. - The Rev. Stanley L. Jaki, a leading thinker in the philosophy of science and theology and on issues where those disciplines meet and diverge, died April 7. He was 84.

Jaki, a Benedictine priest who lived in Princeton, died in Madrid, where he had traveled from Rome after delivering a lecture.

Seton Hall University, where Jaki was a physics professor for many years and achieved the rank of distinguished university professor in 1975, said he died of complications from a heart attack.

The Hungarian-born Jaki, who held doctoral degrees in physics and theology, wrote more than 40 books and hundreds of articles, chapters and essays. He also taught and gave lectures at scores of colleges, universities and institutions around the world.

In 1987, he received the Templeton Prize, an annual award given for advancing the quest to understand God.