Leonard Nimoy, known for his legendary role as Mr. Spock in Star Trek, died on Friday [1] at the age of 83. He suffered from chronic obstructive pulmonary disease.

He sent his last tweet a few days ago, and it was incredibly touching.

A life is like a garden. Perfect moments can be had, but not preserved, except in memory. LLAP

— Leonard Nimoy (@TheRealNimoy) February 23, 2015 [2]

Since the news broke, the world has reacted on Twitter.

Heartbroken to hear Leonard Nimoy is no more. RIP. "You have been, and shall always be, my friend.." #respect [3]

— रanviर_ डhoरeय_ (@RanvirShorey) February 27, 2015 [4]

You were always lovely lovely lovely to me. # Leonard Nimoy

— Nana Visitor (@NanaVisitor) February 27, 2015 [5]

(Nana Visitor was his Star Trek costar.)

Leonard Nimoy brought us one of the greatest, noblest characters in the history of American storytelling. Someone find the Genesis planet.

— Seth MacFarlane (@SethMacFarlane) February 27, 2015 [6]

Leonard Nimoy has died. I've set my phaser on "weep."

— Gary Shteyngart (@Shteyngart) February 27, 2015 [7]

May Leonard Nimoy find peaceful Vulcans--and hot alien women in skintight suits--for all eternity. #splitfingeredsalute [8]

— Brad Parks (@Brad_Parks) February 27, 2015 [9]

#LeonardNimoy [10] was supposed to outlive us all. so very sad.

— moby Ⓥ (@thelittleidiot) February 27, 2015 [11]

Live long and prosper wherever you are, Leonard.

— Additional reporting by Macy Williams