Reply when questioned on the safety of the polio vaccine he developed: It is safe, and you can't get safer than safe.

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.

There is hope in dreams, imagination, and in the courage of those who wish to make those dreams a reality.

Good parents give their children Roots and Wings. Roots to know where home is, wings to fly away and exercise what's been taught them.

[Who owns the patent on this vaccine?] Well, the people, I would say. There is no patent. Could you patent the sun?

Risks, I like to say, always pay off. You learn what to do, or what not to do.

Your dreams tell you what to do; your reason tells you how to do it.

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.

I see the triumph of good over evil as a manifestation of the error-correcting process of evolution.

The most important question we must ask ourselves is, 'Are we being good ancestors?'

I feel that the greatest reward for doing is the opportunity to do more.

Still there is a calm pure harmony and music inside of me.

What is life but a series of inspired follies? The difficulty is to find them to do.

I love walking along Leith's waterfront and wandering around some of New Town's beautiful streets and squares, with their gorgeous Georgian architecture.

You need a team that speaks your language.

I'm really great in other peoples relationships.

We are suffering from a kind of slow-motion barbarization from within.

Sooner or later, everything turns into television.

An actress wants to be seen. An actress wants to be loved. By multitudes of people, not just one lone man.

But hard bitten cynicism leaves one feeling peevish, and too much of it can do lasting damage to your heart.