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

"Did you make a convert of the obstinate antivaxinist at Lello?"

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

"The joy I felt at the prospect before me of being the instrument destined to take away from the world one of its greatest calamities was so excessive that I sometimes found myself in a kind of reverie…"

"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 …"