Joseph Priestley was an 18th-century English theologian, Dissenting clergyman, natural philosopher, educator, and political theorist who published over 150 works.
During his lifetime, Priestley's considerable scientific reputation rested on his invention of soda water, his writings on electricity, and his discovery of several "airs" (gases), the most famous being what Priestley dubbed "dephlogisticated air" (oxygen).
Not many folks have heard of Joseph Priestley but he was a contemporary of Thomas Jefferson, John Adams and Benjamin Franklin and he influenced all of them. He will forever be remembered as the person who discovered oxygen but he was much, much more.
He was a devout Christian who preached in churches and a constant questioner of everything. He studied and experimented in chemistry, atoms, astronomy, religion and much more, he was a true renaissance man. His house was burnt down by rioters in England who didn't like his thoughts. He traveled around England for a bit and ended up moving to America when the country was in its infancy. He was invited to the White House and dined with the most intelligent people of the day who were seeking his thoughts.
This was a great book with a lot of insight to the man, obviously there would be as it came from his own papers. I recommend it.