Whilst Manasseh ben Israel was zealously laboring to complete the fabric of Judaism by hastening on the Messianic era, one of his disciples was applying an intellectual lever to destroy this edifice to its foundation and convert it into a shapeless dust heap. He was earnest about what was only amusement for Leo Modena. The Jewish race once more brought a deep thinker into the world, one who was radically to heal the human mind of its rooted perversities and errors, and to prescribe a new direction for it, that it might better comprehend the connection between heaven and earth, between mind and matter. Like his ancestor Abraham, this Jewish thinker desired to break to pieces all idols and vain images, before which men had hitherto bowed down through fear, custom, and indolence, and to reveal to them a new God, not enthroned in heaven's height beyond their reach, but living and moving within them, whose temple they themselves should be. His influence was like that of the storm, deafening and crushing down, but also purifying and refreshing. The lightning flashes of this great philosophical genius did greatest injury to Judaism which was nearest to him. In the degradation of the religion of his day and its professors, even his searching gaze could not recognize the fair form concealed beneath a loathsome exterior. This great thinker, the most famous philosopher of his time, who brought about a new redemption, was Baruch Spinoza (really Espinosa, born in Spain 1632, died 1677). He belonged to a family eminent for neither intellect nor wealth. No sign at his birth portended that he would reign for more than two centuries a king in the realm of thought. With many other boys, he attended the Jewish school, consisting of seven classes, recently established in Amsterdam, whither his parents had migrated. With his extraordinary talents he surely kept pace with the requirements of the school, if he did not exceed them. In his thirteenth or fourteenth year he was probably introduced by Manasseh ben Israel to the study of the Talmud, and initiated into Hebrew grammar, rhetoric, and poetry. He received final instruction in Rabbinical lore from Saul Morteira, the greatest Talmudist of his time in Amsterdam. Together with Spinoza Morteira taught others who later had more or less influence on Jewish history, but were of quite another stamp.