Every man, when he comes to be sensible of his natural rights, and to feel his own importance, will consider himself as fully equal to any other person whatever.

Methodists in Leeds penned a hymn asking God to "the Unitarian fiend expel / And chase his doctrine back to Hell. While in Paris however Priestley managed to replicate the experiment for others including French chemist Antoine Lavoisier. ) – 6 February 1804) was an 18th-century English theologian Dissenting clergyman natural philosopher chemist educator and political theorist who publiJoseph Priestleyd over 150 works.

It was his metaphysical works however that had the most lasting influence: leading philosophers including Jeremy Bentham John Stuart Mill and Herbert Spencer credit them among the primary sources for utilitarianism. He believed that a proper understanding of the natural world would promote human progress and eventually bring about the Christian Millennium. He is usually credited with the discovery of oxygen having isolated it in its gaseous state although Carl Wilhelm Scheele and Antoine Lavoisier also have a claim to the discovery.