"I have often found that the most simple remedies are the most efficacious."

"It is not, that I am an enemy to the practice of inoculation; on the contrary, I am a warm friend to it, and have been so for many years. But I am convinced, that the present mode of conducting it is …"

"The opposition I have met with has only served to confirm me in my opinion."

"The cow-pox protects the human constitution from the infection of smallpox."

"It is the lot of man to suffer; but it is also his lot to alleviate the sufferings of others."