Mark Kurlansky is a wide-ranging writer, a few of whose works are especially enjoyable to a lover of Jewish culture like me. I especially enjoyed A Chosen Few: The Resurrection of European Jewry and Nonviolence: The History of a Dangerous Idea – both are very interesting books about religion, ethics, and Jewish history. I also loved his books about food such as Salt and Cod.
I don't know about Kurlansky's personal beliefs or religious practices, but I think his works are helpful to a person creating a secular Jewish identity. I plan to read his latest work of fiction soon.