Bloom begins with the problem of liberal education at the end of the 20th century - in a world where students are taught from childhood that "values" are relative and that tolerance is the first virtue, too many students arrive at college without knowing what it means to really believe in anything. They think they are open-minded but their minds are closed to the one thing that really matters: the possibility of absolute truth, of absolute right and wrong. In explaining where we are and how we got here, Bloom presents a devastating critique of modern American education and its students, an intellectual history of the United States and its unique foundation in Enlightenment philosophy, and an assesment of the project of liberal education.
Far from being just another critic of the latest postmodern fad or the ongoing excesses of academic relativism, Bloom has his eye on the ages - his subject is our place in history and our relationship to the canon of philosophy handed down to us over centuries. This book isn't about the last few decades of academic decline, it's about the last few centuries of philosophical upheaval and uncertainty.
Bloom's pessimism about the future prospects of liberal education (and Enlightenment liberalism generally) isn't entirely warranted, but then that's partially because so many of Bloom's readers have taken his warnings seriously and labored to reverse the academic trends he identified so clearly. If the light at the end of the tunnel is now dimly visible, in large part we have Bloom to thank for it.