Foundations of Physics

, Volume 43, Issue 1, pp 174-181

First online:

String Theory

  • Leonard SusskindAffiliated withStanford Institute for Theoretical Physics and Department of Physics, Stanford University Email author 

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After reviewing the original motivation for the formulation of string theory and what we learned from it, I discuss some of the implications of the holographic principle and of string dualities for the question of the building blocks of nature.