Edward Jenner — "The discovery of vaccination is one of the most important that has ever been mad…"

"...has effectually put a stop to the sneers of those little minded persons who think everything impossible which does not come within the narrow sphere of their own comprehension."

"I have been so much engaged in making experiments, that I have had no time to write letters."

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

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

"The greatest reward for my labours is the satisfaction of having done good to my fellow creatures."