Many of humanity's most enduring stories have been told in the simplest ways. Folk tales tell the truths of societies in ways that are outside of time, outside of specific culture, even outside of "reality" itself. But they can be true in ways that more sophisticated, contemporary stories can't hope to be. Thus, the power of Stephen Sondheim and James Lapine's musical, "Into the Woods," which opened at the Music Circus Tuesday night and runs through Sunday. First performed on Broadway in 1987 with Bernadette Peters, and revived many times since, most famously with Vanessa Williams in the role of the Witch in 2002, "Into the Woods" has aged beautifully. Under Glenn Casale's able direction