Begrijpt u nu waarom ik huil?

Begrijpt u nu waarom ik huil? (1969) is a documentary film directed by Louis van Gasteren.

The work of Leiden professor Bastiaans on dealing with the trauma of war victims attracts the attention of filmmaker Louis van Gasteren. He decides to make a film about the psychotherapeutic treatment with LSD of a former concentration camp prisoner in the clinic of Bastiaans. Patient Joop is arrested in September 1941 and begins a long hellish journey through various camps, until he is liberated by the Russians. When he returns to his wife, he has become a completely different man. Joop suffers from nightmares and is incapable of normal human contact. With two cameras, Van Gasteren records approximately six and a half hours of the first treatment that Joop undergoes with Bastiaans (four more will follow later). Special attention is paid to details: Joop's hands, the sweat on his forehead, a tear running slowly down his cheek. Van Gasteren reduces the recordings to more than an hour.