Always show each other respect
Frank stayed at Pop's house while on the mend from an ankle injury. When Frank held a staff meeting about an ongoing police matter, Henry was rightfully upset when his son shunned his advice in front of the group. Later, the two mended fences over a crossword puzzle.
Henry: One day you’ll be here, still with a brain, worthwhile opinions, and, maybe, even some valuable wisdom. I hope for you, whoever's sitting where you are, will appreciate that.