Complex sentence: His main exposition of his philosophical thinking to date is "A Philosophy of the Unsayable" (2014), a book which dwells on the limits of language in order to open thought in untold ways to the inconceivable.
Split into simpler sentences: His main exposition of his philosophical thinking to date is "A Philosophy of the Unsayable" (2014). It dwells on the limits of language in order to open thought in untold ways to the inconceivable.