Jewish secularism refers to secularism in a Jewish context, denoting the definition of Jewish identity with little or no attention given to its religious aspects. The concept of Jewish secularism first arose in the late 19th century, with its influence peaking during the interwar period. The Marranos in Spain, who retained some sense of Jewish identity and alienation while formally Catholic, anticipated the European secularisation process to some degree. Their diaspora outside Iberia united believing Catholics, returnees to Judaism (on both accounts, rarely fully at comfort in their religions) and deists in one "Marrano nation." Baruch Spinoza, the herald of the secular age, advocated the demise of religious control over society and the delegation of faith to the private sphere. Yet his notions lacked anything specifically Jewish: He believed that without the ceremonial law to define the Jews, their collective existence would eventually cease, an outcome he regarded as welcome. There is no evidence he retained a sense of Jewishness after being anathemised in 1656. Religious laxity and acculturation, widespread among Spanish exiles, began to appear among the Ashkenazim of Central Europe when affluent court Jews entered Christian society. At the end of the 18th century, communal autonomy was gradually abolished by the rising centralised states of Europe, and with it the authority of rabbis and wardens to criminally sanction transgressors. Acculturation, piecemeal integration and, far less importantly, Enlightenment thought, all rapidly chafed at traditional observance. With the weakening of Catholic Church, the Jews' traditional role as humiliated witnesses to its truth was no longer a political maxim, and the absolutist rulers pondered how to turn them into useful subjects. Jewish intellectuals, members of a new non-rabbinic secularised elite, likewise attempted to solve the modern problems. Radical Jewish enlighteners like Saul Ascher, Lazarus Bendavid and Perez Peter Beer suggested that Judaism be reduced to little more than Deism.