This is perhaps the most beautiful time in human history; it is really pregnant with all kinds of creative possibilities made possible by science and technology which now constitute the slave of man - if man is not enslaved by it.
Jonas SalkNothing happens quite by chance. It's a question of accretion of information and experience.
Jonas SalkReply when questioned on the safety of the polio vaccine he developed: It is safe, and you can't get safer than safe.
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