Remembering Leonard Nimoy

"Leonard was Spock. Cool, logical, big-eared and level-headed, the center of Star Trek's optimistic, inclusive vision of humanity's future. I loved Spock."

President Obama

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

"Trek" co-star William Shatner

"My heart is broken. I love you profoundly my dear friend, and I will miss you every day."

Zachary Quinto, Spock in two "Star Trek" reboot films

"RIP Leonard Nimoy. So many of us at NASA were inspired by Star Trek. Boldly go …"

"Rest in peace with the stars, my dear friend."

"Trek" co-star George Takei

"We stood on your shoulders, and wouldn't have had a galaxy to explore if you hadn't been there first."

Wil Wheaton, Wesley Crusher on "Star Trek : The Next Generation"

"I was lucky to spend many happy, inspiring hours with him. He won't be forgotten."