Nothing happens quite by chance. It's a question of accretion of information and experience.
Jonas SalkMy ambition was to bring to bear on medicine a chemical approach. I did that by chemical manipulation of viruses and chemical ways of thinking in biomedical research.
Jonas SalkOne of the greatest rewards for doing can be the chances it gives to do some more - even better.
Jonas SalkWhen things get bad enough, then something happens to correct the course. And it's for that reason that I speak about evolution as an error-making and an error-correcting process. And if we can be ever so much better - ever so much slightly better - at error correcting than at error making, then we'll make it.
Jonas Salk