"I have the satisfaction of knowing I did something useful for society." ― John Cameron Topic(s): Society More From John Cameron "I am now almost certain that we need more radiation for better health." "The growth of technology is such that it is not possible today for a nuclear physicist to switch into medical physics without training. The field is now much more technical. More training is needed to do the job." "When I entered medical physics in 1958 there were fewer than 100 in the U.S. and I could see many opportunities to apply my knowledge of nuclear physics." More In Society "I think the first duty of society is justice."― Alexander Hamilton "Relationships are so much a rerun of our parental relationships. We’re rerunning the relationship they were in together and we’re rerunning the relationship we had with them with our lover."― Kenny Loggins "Today the world changes so quickly that in growing up we take leave not just of youth but of the world we were young in."― Peter Medawar