The discovery of HIV in 1983 and the proof that it was the cause of AIDS in 1984 were the first major scientific breakthroughs that provided a specific target for blood-screening tests and opened the doorway to the development of antiretroviral medications.
Anthony Principi
The proof is in the pudding when they come home. Will we have the data about their health, will we know where they were stationed, what their unit deployments were? I will need that information.
Arthur C. Clarke
Perhaps, as some wit remarked, the best proof that there is Intelligent Life in Outer Space is the fact it hasn't come here. Well, it can't hide forever - one day we will overhear it.
Arthur Lewis
We need no elaborate statistical proof that trade depends on prosperity in the industrial countries.
Charles Horton Cooley
To cease to admire is a proof of deterioration.