The lecturer should give the audience full reason to believe that all his powers have been exerted for their pleasure and instruction.
“I haven't become an American! Having a house in LA is just where the house is. It's just a convenience thing living there. I carry Wales around inside me. I'd consider moving back there one day. I never really left.”
“As neither of these two great research scientists was able to find the solution to the mystery, it is small wonder that none of their contemporaries were able to do so either.”