For the truth was, as Mulcahy had to acknowledge, pacing up and down his small office, that in spite of all the evidence he had been given of the president’s unremitting hatred, he found himself hurt by the letter – wounded, to be honest, not only in his self-esteem but in some tenderer place, in that sense of contract between people that transcends personal animosities and factional differences, that holds the individual distinct from the dead and maintains even in the fieriest opposition the dream of final agreement and concord.(这个要怎么理解)