In the year 1888, before leaving the Normal School to face the experiences of actual life, he wrote Credo quia verum. This is a remarkable document, … - Benedictus de Spinoza

Jacobi, a mystical metaphysician deeply influenced by Hamann, cannot reconcile the demands of the soul and the intellect: 'The light is in my heart: as soon as I try to carry it to my intellect, it goes out.' Spinoza was for him the greatest master since Plato of the rational vision of the universe; but for Jacobi this is death in life: it does not answer the burning questions of the soul whose homelessness in the chilly world of the intellect only self-surrender to faith in a transcendent God will remedy.

My interest in Spinoza dates back a very long time, because although I didn't go to university I read an enormous amount when I was young. And I came across Spinoza quite early on. I sensed something in his writing which fascinated me and helped me to see, to look at life. If one wants to be very simple about it I suppose that fascination, or that secret, has to do with his rejection of the Cartesian division between the physical and the spiritual, between body and soul. Because Spinoza maintained that the two are indivisible and that the body is not a kind of machine, as Descartes suggested.

As the French philosopher Louis Althusser wrote in his 1976 Essays in Self-Criticism, much late 20th century Spinozism has proceeded by ‘attributing to the author of the Tractatus Theologico-Politicus and the Ethics a number of theses which he would surely never have acknowledged, though they did not actually contradict him. But to be a heretical Spinozist is almost orthodox Spinozism, if Spinozism can be said to be one of the greatest lessons in heresy that the world has seen!’. Though Spinozists have existed ever since the radical circles that rippled through Europe in the wake of Spinoza's death, I think it is fair to say that only in the past 50 years or so has there been a Spinozism to match in hermeneutic rigour and creative interventions the history of Kantianism or Hegelianism, that only now has the hereticism that Althusser referred to been complemented by the labour of the concept. Arguably, it is only now then that the scope of his thought and its relevance to our social and political existence can be truly appreciated, at a historical juncture when the communicative power of the multitude and of what Marx called the general intellect is so intensified that the physics, ethics, ontology and politics of Spinoza (what are ultimately indissociable facets of his philosophizing) can be thought simultaneously. Today more than ever, one might argue, is Spinoza, as Pierre Macherey puts it, ‘an irreplaceable reactor and developer’.