Matthew's Days (Żywot Mateusza) 56 years old

A man who is socially inept and out of touch with the world lives with his sister in a small farmhouse. The overly sensitive man lives off his hard-working sibling, taking odd jobs as he gets them to secure his meager earnings. When he brings home a woodcutter from the forest, the sister and the newcomer fall in love. Terrified over a life without his sister, the man can't cope and decides to kill himself. This depressing tale of alienation, doubt and uncertainty was the Polish entry at the Cannes Film Festival in 1968.