"A good gulp of hot whisky at bedtime—it's not very scientific, but it helps."

"My greatest satisfaction comes from knowing that my work has saved countless lives."

"I have always been interested in the effect of one microbe on another."

"I hope that my work will inspire others to pursue scientific discovery."

"I have been accused of being untidy. I confess to being untidy, but I have never allowed my untidiness to interfere with my work."