"The picture is, however, still very far from definite - she suggests various alternatives and does not make any definite predictions."

Linus Pauling. Letter to Warren Weaver. March 6, 1937.

"[Delbrück's] training in physics is good and he attacks biological problems in a sensible way. He understands their nature, whereas Dr. Wrinch does not."

Linus Pauling. Letter to Warren Weaver. February 23, 1938.

"...[T]he complexity of the protein molecule appears to furnish, when viewed in terms of atomic forces, a sufficiently intricate, detailed pattern to make understandable the precise specificity of protein reaction."

Warren Weaver. Statement for review. August 28, 1939.

"One of the most interesting aspects of protein research...is the indication that these huge molecules exhibit phenomena that we ordinarily consider possible only to living organisms. Thus viruses 'reproduce' when in a suitable environment; and yet [researchers]...have shown that certain viruses which show this property so characteristic of life are nothing more than huge protein molecules."

Warren Weaver. Statement for review. August 28, 1939.

"I think that this synthesis of antibodies in vitro can be considered pretty important."

Linus Pauling. Letter to Warren Weaver. November 18, 1941.

"...I must confess to a good deal of skepticism as to whether it is possible or desirable to carry over, into peace-time research, many of the elements of organization and control which properly and inevitably characterize war-time work."

Warren Weaver. Letter to Linus Pauling. September 21, 1944.

"The difference between our two predicted configurations and the others that have been described in the literature is that ours are precise, whereas the others are more or less vague. I feel in a sense that this represents the solution of the problem of the structure of proteins."

Linus Pauling. Letter to Warren Weaver. March 8, 1951.