Yuval Noah Harari

Harari is a vegan, and says this resulted from his research, including his view that the foundation of the dairy industry is breaking the bond between mother cow and calf. As of January 2019, Harari does not have a smartphone.

In July 2019 Harari was widely criticised for allowing several omissions and amendments in the Russian edition of his third book 21 Lessons for the 21st Century, using a softer tone when speaking about Russian authorities. Leonid Bershidsky in Moscow Times called it "caution — or, to call it by its proper name, cowardice", and Nettanel Slyomovics in Haaretz claimed that "he is sacrificing those same liberal ideas that he presumes to represent".

His book 21 Lessons for the 21st Century was published on 30 August 2018. It focused more on present-day concerns. A review in New Statesman commented on what it called "risible moral dictums littered throughout the text", criticised his writing style and said that he was "trafficking in pointless asides and excruciating banalities."

Harari summed up his views on the world in a 2018 interview with Steve Paulson of Nautilus thus: "Things are better than ever before. Things are still quite bad. Things can get much worse. This adds up to a somewhat optimistic view because if you realize things are better than before, this means we can make them even better."

Sapiens was a New York Times Best Seller in position 1-3 for 96 consecutive weeks. In 2018, Harari gave the first TED Talk as a digital avatar.

In 2018 and 2020, Harari spoke at the World Economic Forum annual conference in Davos.

In a 2017 article, Harari argued that through continuing technological progress and advances in the field of artificial intelligence, "by 2050 a new class of people might emerge – the useless class. People who are not just unemployed, but unemployable." He put forward the case that dealing with this new social class economically, socially and politically will be a central challenge for humanity in the coming decades.

In 2017, Homo Deus won Handelsblatt's German Economic Book Award for the most thoughtful and influential economic book of the year.

His book Homo Deus: A Brief History of Tomorrow was published in 2016, examining possibilities of the future of Homo sapiens. The book's premise outlines that, in the future, humanity is likely to make a significant attempt to gain happiness, immortality and God-like powers. The book goes on to openly speculate various ways this ambition might be realised for Homo sapiens in the future based on the past and present. Among several possibilities for the future, Harari develops the term dataism for a philosophy or mindset that worships big data.

Harari has commented on the plight of animals, particularly domesticated animals since the agricultural revolution, and is a vegan. In a 2015 Guardian article under the title "Industrial farming is one of the worst crimes in history" he called "[t]he fate of industrially farmed animals [...] one of the most pressing ethical questions of our time."

Harari wrote that although the idea of free will and the liberal values helped consolidate, it "emboldened people who had to fight against the Inquisition, the divine right of kings, the KGB and the KKK", it has become dangerous in a world of a data economy, where, he argues, in reality, there is no such thing, and governments and corporations are coming to know the individual better than they know themselves and "if governments and corporations succeed in hacking the human animal, the easiest people to manipulate will be those who believe in free will." Harari elaborates that "Humans certainly have a will – but it isn’t free. You cannot decide what desires you have... Every choice depends on a lot of biological, social and personal conditions that you cannot determine for yourself. I can choose what to eat, whom to marry and whom to vote for, but these choices are determined in part by my genes, my biochemistry, my gender, my family background, my national culture, etc – and I didn’t choose which genes or family to have."

His book Sapiens: A Brief History of Humankind was originally published in Hebrew in 2011 based on the 20 lectures of an undergraduate world history class he was teaching. It was then released in English in 2014 and has since been translated into some 45 additional languages. The book surveys the entire length of human history, from the evolution of Homo sapiens in the Stone Age up to the political and technological revolutions of the 21st century. The Hebrew edition became a bestseller in Israel, and generated much interest among the general public, turning Harari into a celebrity. Anthropologist Christopher Robert Hallpike reviewed the book and did not find any "serious contribution to knowledge". Hallpike suggested that "...whenever his facts are broadly correct they are not new, and whenever he tries to strike out on his own he often gets things wrong, sometimes seriously". He considered it an infotainment publishing event offering a "wild intellectual ride across the landscape of history, dotted with sensational displays of speculation, and ending with blood-curdling predictions about human destiny."

Harari twice won the Polonsky Prize for "Creativity and Originality", in 2009 and 2012. In 2011 he won the Society for Military History's Moncado Award for outstanding articles in military history. In 2012 he was elected to the Young Israeli Academy of Sciences.

Harari says Vipassana meditation, which he began whilst in Oxford in 2000, has "transformed my life". He practises for two hours every day (one hour at the start and end of his work day), every year undertakes a meditation retreat of 30 days or longer, in silence and with no books or social media, and is an assistant meditation teacher. He dedicated Homo Deus to "my teacher, S. N. Goenka, who lovingly taught me important things", and said "I could not have written this book without the focus, peace and insight gained from practising Vipassana for fifteen years." He also regards meditation as a way to research.

Harari first specialized in medieval history and military history in his studies from 1993 to 1998 at the Hebrew University of Jerusalem. He completed his PhD degree at Jesus College, Oxford, in 2002, under the supervision of Steven J. Gunn. From 2003 to 2005 he pursued postdoctoral studies in history as a Yad Hanadiv Fellow.

Yuval Noah Harari (Hebrew: יובל נח הררי ‎, [juˈval ˈnoaχ (h)aˈʁaʁi] ; born 24 February 1976) is an Israeli historian and a professor in the Department of History at the Hebrew University of Jerusalem. He is the author of the popular science bestsellers Sapiens: A Brief History of Humankind (2014), Homo Deus: A Brief History of Tomorrow (2016), and 21 Lessons for the 21st Century (2018). His writings examine free will, consciousness, intelligence and happiness.

Yuval Noah Harari was born in Kiryat Ata, Israel, in 1976 and grew up in a secular Jewish family with Eastern European and Lebanese roots in Haifa, Israel. Harari is gay and in 2002 met his husband Itzik Yahav, whom he calls "my internet of all things". Yahav is also Harari's personal manager. They married in a civil ceremony in Toronto in Canada. The couple lives in a moshav (a type of cooperative agricultural community of individual farms), Mesilat Zion, near Jerusalem.