It’s when he doesn’t speak that is most effective, though, in the pauses between lines or the scenes where he barely speaks at all, Carell brings something else to the character, and we’re able to see from his first scene that there’s something not quite right there, something broken, angry, and malevolent. The reasons for this aren’t explored fully, but a complex but seemingly loveless relationship between du Pont and his mother is heavily alluded to.
Link: https://awesomefriday.ca/2014/10/viff-review-foxcatcher/