He had never mentioned any interest in children himself but suddenly recognized some small appeal; Sara had found a way to live beyond death.
-- Patrick to the Children (Two)

Importance: This is one of the first instances of Patrick processing his grief after losing Sara. It also establishes why he decides to take the kids with him to Palm Springs, despite being adamant that was a terrible idea. He wants Maisie and Grant to know their mother for who she was, not just by her illness or how others remember her. It also begins exploring the idea of how someone can survive beyond their death by leaving something for others to remember them by. In Sara’s case, that legacy is her children. Over time, Patrick will realize it is also the relationship they established and the memories he can share of her.

Why didn’t anyone acknowledge his loss? Or remember that he knew Sara...
-- Patrick (Three)