Who is John Gielgud, Paul Scofield from The Empty Space and what is their importance?

These two British actors are cited by the author in "The Immediate Theatre" as examples of how actors achieve the same goal (spiritual connection with both the truth of the play they're performing and the audience) through entirely different means. Gielgud, in Brook's experience, was intently focused on language and text, and was able to convey profound meaning by both the use of his voice and by a profound intellectual connection to the text's intent.