What Was String Theory?
Chapter in WHY STRING THEORY?, (2016) 67-91
Why String Theory?
Chapter in WHY STRING THEORY?, (2016) 227-236
Why Strings? Cosmology and Particle Physics
Chapter in WHY STRING THEORY?, (2016) 155-178
Why Strings? Mathematics
Chapter in WHY STRING THEORY?, (2016) 137-153
Why Strings? Quantum Gravity
Chapter in WHY STRING THEORY?, (2016) 179-192