Nevertheless, they are men of this temper who regulate the opinions of the world; who hold up to public scorn, those who are consistent to principle; who expose to the most infuriate vengeance, those who are more rational than themselves. If you will but accredit those profound dreamers, there is nothing short of madness, nothing on this side the most complete derangement of intellect, that can reject a totally incomprehensible motive-power in nature. Is it, then, delirium to prefer the known to the unknown? Is it a crime to consult experience, to call in the evidence of our senses, in the examination of that which we are informed is the most important to be understood? Is it a horrid outrage to address ourselves to reason; to prefer its oracles to the sublime decisions of some sophists, who themselves acknowledge they do not comprehend any thing of the systems they announce? Nevertheless, according to these men, there is no crime more worthy of punishment--there is no enterprize more dangerous to morals--no treason more substantive against society, than to despoil these immaterial substances, which they know nothing about, of those inconceivable qualities which these learned doctors ascribe to them--of that equipage with which a fanatical imagination has furnished them--of those miraculous properties with which ignorance, fear, and imposture have emulated each other in surrounding them: there is nothing more impious than to call forth man's reason upon superstitious creeds; nothing more heretical than to cheer up mortals against systems, of which the idea alone is the source of all their sorrows; there is nothing more pious, nothing more orthodox, than to exterminate those audacious beings who have had sufficient temerity to attempt to break an invisible charm that keeps the human species benumbed in error: if we are to put faith in the asseverations of the hierarchy, to be disposed to break man's chains is to rend asunder his most sacred bonds.
In consequence of these clamours, perpetually renovated by the disciples of imposture, kept constantly afloat by the theologians, reiterated by ignorance, those nations, which reason, in all ages, has sought to undeceive, have never dared to hearken to its benevolent lessons: they have stood aghast at the very name of physical truth. The friends of mankind were never listened to, because they were the enemies to his superstition--the examiners of the doctrines of his priest. Thus the people continued to tremble; very few philosophers had the courage to cheer them; scarcely any one dared brave public opinion; completely inoculated by superstition, they dreaded the power of imposture, the menaces of tyranny, which always sought to uphold themselves by delusion. The yell of triumphant ignorance, the rant of haughty fanaticism, at all time stifled the feeble voice of the disciple of nature; his lessons were quickly forgotten; he was obliged to keep silence; when he even dared to speak, it was frequently only in an enigmatical language, perfectly unintelligible to the great mass of mankind. How should the uninformed, who with difficulty compass the most evident truths, those that are the most distinctly announced, be able to comprehend the mysteries of nature, presented under half words, couched under intricate emblems.