Biologists must constantly keep in mind that what they see was not designed, but rather evolved.
Francis CrickIf poly A is added to poly U, to form a double or triple helix, the combination is inactive.
Francis CrickThere is no scientific study more vital to man than the study of his own brain. Our entire view of the universe depends on it.
Francis CrickFinally one should add that in spite of the great complexity of protein synthesis and in spite of the considerable technical difficulties in synthesizing polynucleotides with defined sequences it is not unreasonable to hope that all these points will be clarified in the near future, and that the genetic code will be completely established on a sound experimental basis within a few years.
Francis Crick