The story gives a face to dementia, a terrible illness. Here, we see Leo lost in his remembrances of the past in seemingly disjointed episodes. At one point, in his present, he says to Molly: wherever I go, I am there. This might be trite to a normal person but so profound to a man who's on the path of losing his mind. This is tragic because memories are one's truest treasures. What would our lives amount to without them to soothe us and talk to us.
The story also focuses on the indispensable role of the caregiver, preferably a close kin who patiently tries to see the world in the eyes of a beloved suffering from dementia. Elle Fanning portrays this role admirably without doubt.
Javier Bardem is such a versatile actor that not one scene in this movie is wasted. Selma Hayek provides a counterpoint playing a role at at time when Leo was a lot younger full of fire in his belly. She was the calming presence in younger Leo's troubled life.
This is a great work of writer/director Sally Potter. She's able to present the story in an understated albeit powerful way. We take notice.