World Mourns the Death of Elie Wiesel

Noble Laureate Elie Wiesel in 2006. Wiesel died Saturday at age 87. Reuters

The world mourns the passing of Elie Wiesel, the activist and author who became a voice for Holocaust victims with his writing and public works. Wiesel died Saturday at age 87.

Many took to social media to express their grief, celebrate Wiesel's life and share his words.

The State of Israel and the Jewish people mourn the passing of Elie Wiesel.

— PM of Israel (@IsraeliPM) July 2, 2016

Yad Vashem mourns the passing of Elie Wiesel-Holocaust survivor, Nobel laureate, renowned author

— Yad Vashem (@yadvashem) July 2, 2016

Holocaust survivor, Nobel Peace Prize laureate, prolific author and outspoken activist Elie Wiesel died Saturday at the...

Posted by Auschwitz Memorial / Muzeum Auschwitz on Saturday, July 2, 2016

In awarding the Peace Prize in 1986, the Nobel Committee praised Wiesel as a "messenger to mankind" and "one of the most important spiritual leaders and guides in an age when violence, repression and racism continue to characterize the world."

Israeli Prime Minister Benjamin Netanyahu hailed Wiesel as a ray of light, and said his extraordinary personality and fascinating books demonstrated the triumph of the human spirit over cruelty and evil.

"Through his unforgettable books, moving words and personal example, Elie personified the triumph of the human spirit over the most unimaginable evil. Out of the darkness of the Holocaust, Elie became a powerful force for light, truth and dignity," he said.

Elie Wiesel was a giant, never letting the world forget or excuse the Holocaust & constantly pushing to avoid future ones. He'll be missed.

— Chuck Schumer (@SenSchumer) July 2, 2016

I pray that the beacon that was Elie Wiesel will long guide us away from the shoals of hatred and racism.

— Mitt Romney (@MittRomney) July 2, 2016

Our global moral conscience has lost some of its strength today. The passing of Elie Wiesel is a reminder that arguably...

Posted by Dan Rather on Saturday, July 2, 2016

Wiesel was 27 years old in 1955 when his classic book Night was published in Yiddish, and Wiesel would later rewrite it for a world audience.

"Never shall I forget that night, the first night in camp, which has turned my life into long night, seven times cursed and seven times sealed ...," Wiesel wrote. "Never shall I forget those flames that consumed my faith forever. Never shall I forget that nocturnal silence which deprived me, for all eternity, of the desire to live."

Asked by an interviewer in 2000 why he did not go insane, Wiesel said, "To this day that is a mystery to me."

By 2008, the New York Times said "Night" had sold an estimated 10 million copies, including 3 million after talk-show hostess Oprah Winfrey made it a spotlight selection for her book club in 2006.

Wiesel wrote more than 50 books—novels, non-fiction, memoirs and many with a Holocaust theme—and held a long-running professorship at Boston University. In one of his later books, "Open Heart," he used his 2011 quintuple-bypass surgery as impetus for reflection on his life.

"I have already been the beneficiary of so many miracles, which I know I owe to my ancestors," he wrote. "All I have achieved has been and continues to be dedicated to their murdered dreams—and hopes."

"Hope is like peace. It is not a gift from God. It is a gift only we can give one another." Rest in peace Elie Wiesel—forever an inspiration

— NY AG Underwood (@NewYorkStateAG) July 2, 2016

Elie Wiesel will be remembered for serving as a UN Messenger of Peace - 2007 #PeaceDay photo

— United Nations (@UN) July 2, 2016

Peace "is our gift to each other." — Elie Wiesel (1928-2016)

— Peace Corps (@PeaceCorps) July 2, 2016

Reuters contributed to this report.