"The human mind is capable of great things; but it is also capable of great errors."

"The deviation of the Cow Pox from its true character appears to be very frequent; and when it does appear, it is, as far as I have seen, uniformly in the following manner: The vesicle, instead of bein…"

"The path of discovery is not a smooth one; it is often beset with difficulties and discouragements."

"I have always endeavoured to be guided by reason, and not by prejudice."

"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 …"