When Alan Garen asked Alfred Hershey for his idea of scientific happiness, Hershey replied, "To have one experiment that works, and keep doing it all the time". The first generation of molecular biologists referred to this as "Hershey heaven."

• http://www.nature.com/nsmb/journal/v8/n1/full/nsb0101_18.html
• http://www.cshl.edu/AnnualReport/hershey.html