Leonard Nimoy: William Shatner and George Takei Remember Their 'Star Trek' Costar

"We return you now to the stars," his "Star Trek" co-star Takei wrote.

— -- Leonard Nimoy died Friday, and his loss has been felt profoundly by his colleagues in Hollywood.

Earlier today, flowers were placed on his Hollywood Walk of Fame star, and many of his fellow actors, including his "Star Trek" costars, expressed their condolences on social media.

"I loved him like a brother," William Shatner wrote on Facebook. "We will all miss his humor, his talent, and his capacity to love."

Best known for playing Spock in "Star Trek" on TV and in film, the actor also worked in the theater, portraying Tevye in "Fiddler on the Roof," and published poetry and books of photography.