"I am now almost certain that we need more radiation for better health." ― John Cameron Topic(s): Health More From John Cameron "I have the satisfaction of knowing I did something useful for society." "Medical physicists work in cooperation with doctors. A few medical physicists devote their time to research and teaching. A few get involved with administrative duties." "There are now over 5,000 medical physicists in the U.S more than 50 times the number in 1958." More In Health "That’s why I wrote this book: to show how these people can imbue us with hope. I read somewhere that when a person takes part in community action, his health improves. Something happens to him or to her biologically. It’s like a tonic."― Studs Terkel "I was probably cool around the end of 2002."― Martin Freeman "I was for civil unions and believed strongly that the flow of benefits and protections that would be provided in a civil union for same-sex couples, the decisions that have to be made, when health hardships are faced, when economic hardships are faced, I wanted all of those protections. I never strayed from them."― Harold Ford