This thinker grouped matter and essence with truth and spirit, and believed that arational awareness was the foundation of knowledge, an idea this author of (*) The Realms of Being expressed as "philosophy begins in medias res."
This thinker argued that matter was a metaphor since it symbolized the unknown and that knowledge had to be characterized as "essence", a term he used to refer to concepts and ideas. This thinker grouped matter and essence with truth and spirit, and believed that arational awareness was the foundation of knowledge, an idea this author of (*) The Realms of Being expressed as "philosophy begins in medias res." For 10 points, name this author of Skepticism and Animal Faith who is best known for an aphorism about repeating the past.
This thinker argued that matter was a metaphor since it symbolized the unknown and that knowledge had to be characterized as "essence", a term he used to refer to concepts and ideas.
George Santayana [or Jorge Agustín Nicolás Ruiz de Santayana y Borrás]