If you are looking for supplemental "feature" content on the disc beyond the movie itself:
The 1080p Blu-ray release of typically includes English and Spanish subtitles. As a Terrence Malick film, it is known for being dialogue-sparse and heavily reliant on lyrical voice-over narration, which is captured in these subtitle tracks. Subtitle Information for 1080p Blu-ray subtitle Knight.Of.Cups.2015.1080p.BluRay.x264 ...
: Unlike traditional narrative films, the subtitles primarily translate the whispering, "stream-of-consciousness" voice-over musings of characters like Rick (Christian Bale) rather than standard conversational dialogue. Special Features on the Blu-ray If you are looking for supplemental "feature" content
: Standard North American Blu-ray editions feature English SDH (Subtitles for the Deaf and Hard of Hearing) and Spanish . International versions, such as those from Germany, may include German subtitles. Special Features on the Blu-ray : Standard North
Tools like DownSub can sometimes extract subtitles from legal streaming versions of the film. Knight of Cups Blu-ray
: The featurette is noted for helping viewers interpret the film's abstract themes by providing context on its unique production. External Subtitle Sources