Actors William Shatner, left, and Leonard Nimoy pose for a photo during an interview for the 40th anniversary of the science-fiction television series 'Star Trek' in Los Angeles in this August 9, 2006, file photo. Nimoy, the actor famous for playing the logical Mr. Spock on the television show "Star Trek," died on February 27, 2015 at age 83, according to The New York Times. [Photo/Agencies]

"I loved him like a brother. We will all miss his humor, his talent and his capacity to love," William Shatner, who co-starred on "Star Trek" as Captain Kirk, said in a statement.

"Today, the world lost a great man, and I lost a great friend. We return you now to the stars, Leonard. You taught us to 'Live Long and Prosper,' and you indeed did, friend. I shall miss you in so many, many ways," "Star Trek" fellow cast member George Takei, who played Hikaru Sulu, wrote on Facebook.