This book provides an accessible, critical introduction to the three main approaches that dominated work in the philosophy of mathematics during the twentieth century: logicism, intuitionism and formalism.

"Post is a pioneer in the field of political-personality profiling. He may be the only psychiatrist who has specialized in the self-esteem problems of both Osama bin Laden and Saddam Hussein." The New Yorker "Policy specialists and academic scholars have long agreed that for U.S. leaders to deal effectively with other actors in the international arena, they need images of their adversaries. Leaders must try to see events, and, indeed, their own behavior, from the perspective of opponents. . . . Faulty images are a source of misperceptions and miscalculations that have often led to major...