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Surely . . . Judaism is more than the history of anti-semitism. Surely Jews deserve to be defined—and are in fact defined, by others as well as by themselves—by those qualities of faith, lineage, sacred texts and moral teachings that have enabled them to endure through centuries of persecution. —GERTRUDE HIMMELFARB1 In many spheres of life, Jews have made contributions that are far larger than might be expected from their numbers. Jews constitute 0.2% of the world’s population, but won 14% of Nobel Prizes in the first half of the 20th century, despite social discrimination and the Holocaust, and 29% in the second. As of 2007, Jews had won an amazing 32% of Nobel Prizes awarded in the 21st century.2 Jews have excelled not only in science but also in music (Mendelssohn, Mahler, Schoenberg), in painting (Pissarro, Modigliani, Rothko), and in philosophy (Maimonides, Bergson, Wittgenstein). Jewish authors have won the Nobel Prize in Literature for writing in English, French, German, Russian, Polish, Hungarian, Yiddish and Hebrew.3 Such achievement requires an explanation, and an interesting possibility is that Jews have adapted genetically to a way of life that requires higher than usual cognitive capacity. People are highly imitative, and if the Jewish advantage were purely cultural, such as hectoring mothers or a special devotion to education, there would be little to prevent others from copying it. Instead, given the new recognition of human evolution in the historical past, it is possible that Jewish intellectual achievement has emerged from some pressure in their special history. Just as races have evolved in the recent past, ethnicities within races will also evolve if they are reproductively isolated to some extent from their host population, whether by geography or religion. The adaptation of Jews to a special cognitive niche, if indeed this has been an evolutionary process, as is argued below, represents a striking example of natural selection’s ability to change a human population in just a few centuries.
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