Table of Contents

Introduction vii

PART I: THE UNFINISHED REVOLUTION
1: The Five Great Problems in Theoretical Physics 1
2: The Beauty Myth 18
3: The World As Geometry 38
4: Unification Becomes a Science 54
5: From Unification to Superunification 66
6: Quantum Gravity: The Fork in the Road 80

PART II: A BRIEF HISTORY OF STRING THEORY
7: Preparing for a Revolution 101
8: The First Superstring Revolution 114
9: Revolution Number Two 129
10: A Theory of Anything 149
11: The Anthropic View 161
12: What String Theory Explains 177

PART III: BEYOND STRING THEORY
13: Surprises from the Real World 203
14: Building on Einstein 223
15: Physics After String Theory 238

PART IV: LEARNING FROM EXPERIENCE
16: How Do You Fight Sociology? 261
17: What Is Science? 289
18: Seers and Craftspeople 306
19: How Science Really Works 332
20: What We Can Do for Science 349