After the Renaissance and the Early Modern Period, Jews were integrated increasingly and permitted to live openly as Jews in more and more countries. After the French Revolution, France and other European countries affected by French rule through Napoleon I introduced secular laws aimed at abolishing religion in the public sphere and assimilating Jews, i.e. treating them more openly as citizens and members of the public, who could believe whatever they wanted privately and still be members of the community. Other Jews began to discard their religion too, or integrated willingly into the larger community, such as by becoming Christians, like British Prime Minister Benjamin Disraeli's father, Isaac d'Israeli. Many European countries had restrictions on Jews until the 19th and 20th centuries, however, such as banning them from certain professions or holding public offices. Many Jews became prominent scientists or public intellectuals, however, such as Karl Marx, Sigmund Freud and Albert Einstein. Only one hundred years before, this would have been impossible. 