Edward Jenner — "I have never been a lover of controversy; but when truth is concerned, I am not …"

"I have often reflected, with a degree of wonder, on the slow progress of human knowledge."

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

"It is a pity that the practice of inoculation has not been more generally adopted; for if it had, many lives might have been saved."

"My greatest ambition has always been to be useful to mankind."

"I shall not attempt to give a detail of all the cases that have come under my observation, but shall select a few of the most striking, and such as will, I trust, be sufficient to convince the candid …"