Putnam's willingness to have an open and honest mind probably could not be divorced as a jack-of-all-trades philosopher; there was rarely an area of philosophy that he did not write or think about.
From legal positivism where he initially studied, during a long career teaching at Harvard, Hilary Putnam eventually became convinced that Theism was not only a competing worldview, but was the correct one. In 1994, at the age of 68, Hilary Putnam had his own bar mitzvah.
Putnam found solace in another well known Jewish philosopher, Franz Rosenzweig, who, like Putnam, came to his Jewish faith late in his life. According to Benajamin Balint, Putnam understood Rosenzweig's thoughts on metaphysics as an "exaggerated form of a disease in which everyone is susceptible -- the disease is borne by those who substitute words that have no religious content because they have no internal relation to a genuine religion life." This easily resonates.
One other note: Putnam's obituary in the New York Times had an amazing story line in it I was unaware of. In an amazing coincidence, or not, perhaps the only more famous philosopher at Harvard, Noam Chomsky, knew Putnam for 75 years -- since they were classmates in high school in Philadelphia.
