"I have often been struck with the wonderful harmony that prevails throughout the works of nature."

"I shall not, I presume, be thought presumptuous in declaring, that the Cow Pox is the most efficacious, and the most safe, of all the methods that have been yet discovered, for eradicating the Small P…"

"I have always endeavoured to act upon the principle, that what is right to be done, should be done with all our might."

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

"I shall endeavor still further to prosecute this inquiry, an inquiry I trust not merely speculative, but of sufficient moment to inspire the pleasing hope of its becoming essentially beneficial to man…"