What do Albert Einstein, Natalie Portman, Barbra Streisand, Sigmund Freud and Billy Crystal all have in common?

They have all had affiliation with the Hebrew University

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albert einstein
Professor Albert Einstein
reuven rivlin
Reuven (Rubi) Rivlin
billy crystal
Billy Crystal
natalie portman
Natalie Portman
martin buber
Martin Buber
barbra streisand
Barbra Streisand
marc chagall
Marc Chagall
sigmund freud
Sigmund Freud
chaim weizmann
Dr Chaim Weizmann
yonatan netanyahu
Yonatan Netanyahu
yigael yadin
Yigael Yadin
yitzhak rabin
Yitzhak Rabin
amoz oz
Amos Oz
steven spielberg
Steven Spielberg
yuval noah harari
Yuval Noah Harari