Hope lies in dreams, in imagination, and in the courage of those who dare to make dreams into reality.
I feel that the greatest reward for doing is the opportunity to do more.
I have had dreams and I have had nightmares, but I have conquered my nightmares because of my dreams.
I pictured myself as a virus or a cancer cell and tried to sense what it would be like.
I was merely interested in things human, the human side of nature, if you like, and I continue to be interested in that. That's what motivates me.
If all the insects were to disappear from the earth, within 50 years all life on earth would end. If all human beings disappeared from the earth, within 50 years all forms of life would flourish.
Intuition will tell the thinking mind where to look next.
It is always with excitement that I wake up in the morning wondering what my intuition will toss up to me, like gifts from the sea. I work with it and rely on it. It's my partner.
It is courage based on confidence, not daring, and it is confidence based on experience. [On testing his vaccine against polio on himself, his wife, and his three sons, 1955]
Neither wisdom nor good will is now dominant. Hope lies in dreams, in imagination and in the courage of those who dare to make dreams into reality.
Nothing happens quite by chance. It's a question of accretion of information and experience.
Our greatest responsibility is to be good ancestors.
Risks, I like to say, always pay off. You learn what to do, or what not to do.
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 each age.
The reward for work well done is the opportunity to do more.
The worst tragedy that could have befallen me was my success. I knew right away that I was through - cast out.
There is hope in dreams, imagination, and in the courage of those who wish to make those dreams a reality.
There is no such thing as failure, there's just giving up too soon.
Well, the people, I would say. There is no patent. Could you patent the sun? [Response to Edward R. Murrow's question, "Who owns the patent on this vaccine?"]
What makes your heart leap?
Why did Mozart compose music? [Response when asked why he chose to do medical research rather than be a practicing physician]