The Brothers Karamazov is a joyful book. Readers who know what it is about may find this an intolerably whimsical statement. It does have moments of joy, but they are only moments; the rest is greed, lust, squalor, unredeemed suffering, and a sometimes terrifying darkness. But the book is joyful in another sense: in its energy and curiosity, in its formal inventiveness, in the mastery of its writing.