Priests have been ever at war with genius and talent, because well-informed men perceive, that superstition shackles the human mind, and would keep it in eternal infancy, occupied solely by fables and frightened by phantoms. Incapable of improvement itself, Theology opposed insurmountable barriers to the progress of true knowledge; its sole object is to keep nations and their rulers in the most profound ignorance of their duties, and of the real motives, that should incline them to do good. It obscures Morality, renders its principles arbitrary, and subjects it to the caprice of the gods or of their ministers. It converts the art of governing men into a mysterious tyranny, which is the scourge of nations. It changes princes into unjust, licentious despots, and the people into ignorant slaves, who become corrupt in order to merit the favour of their masters. 199. By tracing the history of the human mind, we shall be easily convinced, that Theology has cautiously guarded against its progress. It began by giving out fables as sacred truth: it produced poetry, which filled the imagination of men with its puerile fictions: it entertained them with its gods and their incredible deeds. In a word, Religion has always treated men, like children, whom it lulled to sleep with tales, which its ministers would have us still regard as incontestable truths. If the ministers of the gods have sometimes made useful discoveries, they have always been careful to give them a dogmatical tone, and envelope them in the shades of mystery. Pythagoras and Plato, in order to acquire some trifling knowledge, were obliged to court the favour of priests, to be initiated in their mysteries, and to undergo whatever trials they were pleased to impose. At this price, they were permitted to imbibe those exalted notions, still so bewitching to all those who admire only what is perfectly unintelligible. It was from Egyptian, Indian, and Chaldean priests, from the schools of these visionaries, professionally interested in bewildering human reason, that philosophy was obliged to borrow its first rudiments. Obscure and false in its principles, mixed with fictions and fables, and made only to dazzle the imagination, the progress of this philosophy was precarious, and its theories unintelligible; instead of enlightening, it blighted the mind, and diverted it from objects truly useful.