David Ogden Stiers

Actor (Dr. Timicin) — The Next Generation

American actor (1942–2018), familiar as Major Winchester in M*A*S*H, who played the Kaelon scientist Timicin, facing ritual death at sixty, in the episode Half a Life.

David Ogden Stiers was an American actor and conductor, born in 1942, best known as Major Charles Emerson Winchester III in the later seasons of MAS*H and as a voice actor in Disney films such as Beauty and the Beast.
In Star Trek: The Next Generation he guest stars in the fourth-season episode Half a Life, first shown in 1991. He plays Dr. Timicin of Kaelon II, who has spent his career trying to revive his world's dying sun. He and Lwaxana Troi fall in love, and she is appalled to learn that his people's custom, the Resolution, requires him to end his life at the age of sixty.
The episode gave Majel Barrett's Lwaxana her first serious story. Stiers died in 2018.