whatsoever is, is in God, and without God nothing can be, or be conceived - Benedictus de Spinoza

I had hoped that out of so many stories you would at least have produced one or two, which could hardly be questioned, and which would clearly show that ghosts or spectres exist. The case you relate... seems to me laughable. In like manner it would be tedious here to examine all the stories of people, who have written on these trifles. To be brief, I cite the instance of Julius Caesar, who, as Suetonius testifies, laughed at such things and yet was happy. ...And so should all who reflect on the human imagination, and the effects of the emotions, laugh at such notions; whatever Lavater and others, who have gone dreaming with him in the matter, may produce to the contrary.

No philosopher was ever more worthy, but neither was any philosopher more maligned and hated. To grasp the reason for this it is not enough to recall the great theoretical thesis of Spi­nozism: a single substance having an infinity of attributes, Deus sive Natura, all "creatures" being only modes of these attributes or modifications of this substance. It is not enough to show how pantheism and atheism are combined in this thesis, which denies the existence of a moral, transcendent, creator God. We must start rather from the practical theses that made Spinozism an object of scandal. These theses imply a triple denunciation: of "consciousness," of "values," and of "sad passions." These are the three major resemblances with Nietzsche. And already in Spinoza's lifetime, they are the reasons for his being accused of materialism, immoralism, and atheism.

Spinoza believed that he had, through metaphysical inquiry, discovered important truths about God, nature and human beings, truths that led to principles of great consequence for our happiness and our emotional and physical flourishing. This, in fact, is what he called “true religion.” There is a lesson here: By enforcing conformity of belief and punishing deviations from dogma, religious authorities may end up depriving the devoted of the possibility of achieving in religion that which they most urgently seek.