Quote by Paul Ehrlich
"Progress in medicine is measured not in grand theories, but in lives preserved."
"Progress in medicine is measured not in grand theories, but in lives preserved."
"The microbe is so much smaller than ourselves that we can easily forget the fact that it stalks us all the time, waiting, and watching for the moment when we lay down our defense."
"A person who makes no mistakes has tried nothing new."
"In science there are no shortcuts to truth."
"The side-chain theory explains the formation of antibodies."