Common Ground for a Wiccan and a Rabbi?

The Parliament of the World’s Religions, which kicked off Thursday in Toronto, brings together thousands of representatives from dozens of religious traditions. The largest and oldest event of its kind, it will focus on the gentler virtues of interreligious cooperation and “inclusion.” It deserves to be better known, but one reason for its relative anonymity is the conspicuous absence of many traditionalist religious groups.

Today’s parliament tracks back to a landmark interfaith convention held in conjunction with the 1893...