Leonard Nimoy, best known for playing the role of Spock in the “Star Trek” movies and television series has died at age 83, his rep confirmed to FOX411.

Nimoy was taken to the hospital earlier this week and treated for lung disease. His son told the Associated Press he died in Los Angeles.

The actor wrote on Twitter last month that he suffered from chronic obstructive pulmonary disease, despite quitting smoking 30 years ago.

Although Leonard Nimoy followed his 1966-69 “Star Trek” run with a notable career as both an actor and director, in the public’s mind he would always be Spock. His half-human, half-Vulcan character was the calm counterpoint to William Shatner’s often-emotional Captain Kirk on one of television and film’s most revered cult series.

Shatner released a statement to FOX411 via email after the news of his costar’s death broke.

“I loved him like a brother,” Shatner worte. “We will all miss his humor, his talent, and his capacity to love.”