The Nobel Prize-winning physicist and bestselling author of iThe First Three Minutesi describes the grand quest for a unifying theory of nature--one that can explain forces as different as the cohesion inside the atom and the gravitational tug between the sun and Earth. Wirting with dazzling elegance and clarity, he retraces the steps that have led modern scientists from relativity and quantum mechanics to the notion of super-strings and the idea that our universe may coexist with others. pBut Weinberg asks as many questions as he answers, among them Why does each explanation of the way nature works point to other, deeper explanations Why are the best theories not only logical but beautiful And what implications will a final theory have for our philosophy and religious faith pIntellectually daring, rich in anecdote and aphorism, iDreams of a Final Theoryi launches us into a new cosmos and helps us make sense of what we find there.