Dr. Jonas Salk who changed the world through medicine

I gave a lecture in the Department of Medicine at the University of Pittsburgh School of Medicine two weeks ago. Dr. Jonas Salk, who created the polio vaccine and changed our world, was a faculty member there. He did not own the patent to the vaccine. He said, "There is no patent. Could you patent the sun?" What do you think? His sole focus had been to develop a safe and effective vaccine as rapidly as possible, with no interest in personal profit. His selfless act made this world a better place. I’d like to follow him.