He [Spinoza] does not prove the existence of God, existence is God. And if for this reason others would brand him Atheum then I would praise him and … - Benedictus de Spinoza

Although Baruch Spinoza is one of the great thinkers of the European philosophical tradition, he was not a professional scholar – he earned his modest living as a lens grinder. So, unlike many thinkers of his time, he was unconstrained by allegiance to a church, university or royal court. He was free to be faithful to the pursuit of truth. This gives his philosophy a remarkable originality and intellectual purity – and it also led to controversy and charges of heresy. In the 19th century, and perhaps even more recently, "Spinozist" was still a term of abuse among intellectuals. In a sense, Spinoza was always an outsider – and this independence is precisely what enabled him to see through the confusions, prejudices and superstitions that prevailed in the 17th century, and to gain a fresh and radical perspective on various philosophical and religious issues.

Let no one argue against this that we are living in a different century, that much water has flowed under the bridge and that our problems are no longer the same. We are discussing living water which has not yet flowed away. We are familiar with enough historical examples, beginning with that of Spinoza, where men have worked ferociously to wall up for ever and bury deep in the earth sources which were made to quench their thirsts, but which their fear will not tolerate. For nearly a century academic philosophy has buried Marx in the earth of silence, the earth of the cemetery.

With the judgment of the angels and the sentence of the saints, we anathematize, execrate, curse and cast out Baruch de Espinoza, the whole of the sacred community assenting, in presence of the sacred books with the six-hundred-and-thirteen precepts written therein, pronouncing against him the malediction wherewith Elisha cursed the children, and all the maledictions written in the Book of the Law. Let him be accursed by day, and accursed by night; let him be accursed in his lying down, and accursed in his rising up ; accursed in going out and accursed in coming in. May the Lord never more pardon or acknowledge him; may the wrath and displeasure of the Lord burn henceforth against this man, load him with all the curses written in the Book of the Law, and blot out his name from under the sky; may the Lord sever him from all the tribes of Israel, weight him with all the maledictions of the firmament contained in the Book of Law; and may all ye who are obedient to the Lord your God be saved this day. Hereby then are all admonished that none hold converse with him by word of mouth, none hold communication with him by writing ; that no one do him any service, no one abide under the same roof with him, no one approach within four cubits' length of him, and no one read any document dictated by him, or written by his hand.