What an effort, my dear Sir, of bigotry in Politics & Religion have we gone through. The barbarians really flattered themselves they should even be able to bring back the times of Vandalism, when ignorance put every thing into the hands of power & priestcraft. All advances in science were proscribed as innovations. They pretended to praise & encourage education, but it was to be vain the education of our ancestors. We were to look backwards not forwards for improvement, the President himself declaring in one of his answers to addresses that we were never to expect to go beyond them in real science. This was the real ground of all the attacks on you: those who live by mystery & charlatanerie, fearing you would render them useless by simplifying the Christian philosophy, the most sublime & benevolent, but most perverted system that ever shone on man, endeavored to crush your well earnt, & well deserved fame.

Thomas Jefferson (1743-1826) American political philosopher, polymath, statesman, US President (1801-09)

Letter to Joseph Priestley (21 Mar 1801)
    (Source)