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

"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 …"

"The pursuit of knowledge is an endless one; but it is also a most delightful one."

"The Cow Pox, when it has once taken place, is a security against the Small Pox for life."

"The most important discoveries have often been made by accident."