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

-William Shatner http://t.co/U8ZN98tVYp

— William Shatner (@WilliamShatner) February 27, 2015

Farewell Leonard. Glad I knew you. Thinking of Susan, Adam, and his entire family. And his vast extended family of Star Trek.

— Brent Spiner (@BrentSpiner) February 27, 2015

It is with sadness that I heard of Leonard Nimoy's death. I was lucky to spend many happy, inspiring hours with him. He won't be forgotten.

— Patrick Stewart (@SirPatStew) February 27, 2015

#LLAP RIP to the best First Officer. @TheRealNimoy

— Jonathan Frakes (@jonathansfrakes) February 27, 2015

God Bless You, Leonard Nimoy… May Angels guide thee to thy rest!#agoodman
#talented
#funny
#awesome

— LeVar Burton (@levarburton) February 27, 2015

RIP, Mr. Nimoy.
You really did live long and prosper, and we were all the richer for it.

— Jeri Ryan (@JeriLRyan) February 27, 2015

We are deeply saddened to report the passing of Leonard Nimoy. He died this morning at the age of 83 #LLAP pic.twitter.com/M5994t9HIL

— Star Trek (@StarTrek) February 27, 2015

A sad day for all of us. Live long and prosper … then rest in peace. http://t.co/oU5B9HM7Oj

— Robert Picardo (@RobertPicardo) February 27, 2015

"I loved Spock." —President Obama #RIPLeonardNimoy #LLAP pic.twitter.com/vmwjnQ3Zm3

— White House Archived (@ObamaWhiteHouse) February 27, 2015

RIP Leonard Nimoy. So many of us at NASA were inspired by Star Trek. Boldly go… http://t.co/qpeH5BTzQc pic.twitter.com/nMmFMKYv1L

— NASA (@NASA) February 27, 2015

Live long and prosper. So long, Mr. Nimoy.

— Elijah Wood (@elijahwood) February 27, 2015

Leonard Nimoy was more than Mr. Spock. But Mr. Spock is his gift to us all. Live long and prosper. HANX.

— Tom Hanks (@tomhanks) February 27, 2015

He created a role that nobody else could play. Multitalented writer,actor,director. A terrific&sweet man. RIP Leonard Nimoy #Spock #StarTrek

— Larry King (@kingsthings) February 27, 2015

. @TheRealNimoy
I have been, and always shall be, your fan.

Thank you.

— Nathan Fillion (@NathanFillion) February 27, 2015

This was @TheRealNimoy's last tweet: "A life is like a garden. Perfect moments can be had, but not preserved, except in memory." RIP, sir.

— Misha Collins (@mishacollins) February 27, 2015

"Of all the souls I have encountered in my travels, his was the most… Human." Farewell, Leonard Nimoy – Actor, Director, Pop culture icon.

— KevinSmith (@ThatKevinSmith) February 27, 2015

Goodbye, Leonard. You will be greatly missed. #LLAP pic.twitter.com/AcdglYh2by

— The Simpsons (@TheSimpsons) February 27, 2015