These words came truly from the bottom of his heart.
Tips
usage
In traditional medicine the body's organs split into 脏 (solid viscera) and 腑 (hollow organs like stomach and intestines). The phrase 肺腑之言 means words from the depths of one's heart.
Right 府 supplies the sound, fǔ with no tone shift. Its sense of an inner storehouse loosely echoes the body's internal organs, but its main job is phonetic. The same phonetic appears in 腐.
