Saul Kripke wrote about [This Man] on Rules and Private Language, and he responded to G.E. Moore's attack on skepticism with On Certainty.  
Realism and Imagination in Ethics and Good and Evil: An Absolute Conception were among the works inspired by this man's namesake school of realism.  He claims "Rules of life are dressed up in pictures" in Culture and Value, and in one work this man used the Beetle-in-a-box thought experiment to show that private things become public once expressed.  Saul Kripke wrote about [This Man] on Rules and Private Language, and he responded to G.E. Moore's attack on skepticism with On Certainty.  Author of the Philosophical Investigations, FTP, identify this Austrian philosopher who also wrote some Blue and Brown Books and the Tractatus Logico-Philosophicus.
Realism and Imagination in Ethics and Good and Evil: An Absolute Conception were among the works inspired by this man's namesake school of realism.  
Ludwig {Wittgenstein}