“We live and die by the stories we tell each other,” is the line that begins writer/director Jonathan Nossiter’s latest piece, the exquisite “Last Words.”

Adapted from a novel by Santiago Amigorena (he also co-wrote the screenplay), Nossiter’s film follows Kal (newcomer Kalipha Touray), the last human on the face of the Earth. The year is 2085. One year earlier he was