"The most exciting moments in science are when you discover something completely new."

"My own work is concerned with the structure of nucleic acids. I am trying to determine the structure of DNA."

"I am quite confident that the structure is helical, but the exact dimensions are still to be determined."

"The structure of tobacco mosaic virus is quite intricate, and I'm enjoying the challenge."

"The more I work on this, the more complex it seems to become."