United Kingdom, Sept. 3 -- Kevin Costner has remembered Graham Greene as a "wonderful human being".

The Yellowstone actor has shared a touching tribute to his Dances with Wolves co-star - who died on 1 September aged 73 following a long illness - and admitted he will always be "grateful" to have worked with him on the film, which marked Kevin's directorial debut and won Graham a Best Supporting Actor nomination.

The 73-year-old actor-and-director shared a clip from the 1990 movie, in which his own character Lieutenant Dunbar attempted to converse with Graham's Kicking Bird and his tribe.

He captioned the post: "A few things come to mind when I think of Graham Greene and our time together on Dances With Wolves.

"I think of how willing ...