“Some people are constructive, if you like. Others are destructive. It's this diversity in humankind that results in some making positive contributions and some negative contributions. It's necessary to have enough to make positive contributions to overcome the problems of… — Jonas Salk Copy Share Image
Hope lies in dreams, in imagination, and in the courage of those who dare to make dreams into reality. — Jonas Salk Copy Share Image
Nothing happens quite by chance. It's a question of accretion of information and experience. — Jonas Salk Copy Share Image
It is courage based on confidence, not daring, and it is confidence based on experience. — Jonas Salk Copy Share Image
When things get bad enough, then something happens to correct the course. And it's for that reason that I speak about evolution as an… — Jonas Salk Copy Share Image
Reply when questioned on the safety of the polio vaccine he developed: It is safe, and you can't get safer than safe. — Jonas Salk Copy Share Image
I have had dreams and I have had nightmares, but I have conquered my nightmares because of my dreams. — Jonas Salk Copy Share Image
My life is pretty well at peace, and the profession is more of an avocation. It's a calling, if you like, rather than a… — Jonas Salk Copy Share Image
As a child I was not interested in science. I was merely interested in things human, the human side of nature, if you like,… — Jonas Salk Copy Share Image
My ambition was to bring to bear on medicine a chemical approach. I did that by chemical manipulation of viruses and chemical ways of… — Jonas Salk Copy Share Image
The worst tragedy that could have befallen me was my success. I knew right away that I was through - cast out. — Jonas Salk Copy Share Image
