Patrick Stewart received classical training in his craft and was an acclaimed master of the Shakespearean stage long before he took up film roles and then became widely known to American audiences in Star Trek: The Next Generation.
When acting and directing are done well, the audience doesn't even notice it because the narrative flows so naturally. But good acting isn't done casually or naturally; it's the result of particular choices executed precisely.
In this video, Rowan J. Coleman describes how Patrick Stewart, in the role of Captain Picard, demonstrated masterful execution of timing, intonation, body language, and other facets of the actor's craft. He contrasts Stewart's portrayal of Picard with that of William Shatner's depiction of Captain Kirk to explain how top-tier actors express themselves so effectively.
-via reddit