Yours is one of the few lives precious to mankind, and for the continuance of which every thinking man is solicitous. Bigots may be an exception. What an effort, my dear sir, of bigotry in politics and religion have we gone through! The barbarians really flattered themselves they should be able to bring back the times of Vandalism, when ignorance put everything into the hands of power and priestcraft. All advances in science were proscribed as innovations. They pretended to praise and encourage education, but it was to be the education of our ancestors. We were to look backwards, not forwards, for improvement ... 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 and benevolent, but most perverted system that ever shone on man - endeavored to crush your well-earned & well-deserved fame.