James Panero visits the Nicholas Roerich Museum and reviews several current exhibitions including: Meg Hitchcock: The Land of Bliss at Studio10, Brooklyn (through November 10), Judith Linhares and Loren Munk with Rebecca Litt at Valentine Gallery, Ridgewood, Queens (through November 17), Meta Vista at 16 Wilson, Brooklyn (through November 9), and Scale at Life on Mars, Brooklyn (through November 2).