The Grammar Of Happiness follows the story of Daniel Everett among the extraordinary 'nonconvertible' Amazonian Pirah tribe, a group of indigenous hunter- gatherers whose culture and outlook on life has taken the world of linguistics by storm. As a young ambitious missionary three decades ago, Dan, a red-bearded towering American, decamped to the Amazon rain forest to save indigenous souls. His assignment was to translate the book of Mark into the tongue of the Pirah, a people whose puzzling speech seemed unrelated to any other on Earth. Wha...