Giving cancer to laboratory animals has not and will not help us to understand the disease or to treat those persons suffering from it.

A scientist who is also a human being cannot rest while knowledge which might be used to reduce suffering rests on the shelf.

Without animal research, polio would still be claiming thousands of lives each year.

The work on [polio] prevention was long delayed by... misleading experimental models of the disease in monkeys

Freedom can be forgotten in the repressive countries. To remember freedom, it will be enough to watch a happy seagull flying in the sky!

ThatNeed to knowYour enemyTo surviveIs bitter.

I probably write a poem every 50 years.

The sole purpose of being rich is to give away money.

For me, few things are more compelling than watching a great opera.

I love grabbing my wife and going to a distant location to film.

The rhythm is below me, the rhythm of the heat. The rhythm is around me, the rhythm has control. The rhythm is inside me, the rhythm has my soul.

My poems - I don't even like the sound of that, in a way. Not that anyone else wrote them. But we know that only people who are really close to us care about our personal experience.

Empirical interest will be in the facts so far as they are relevant to the solution of these problems.

Our new watches are made entirely of double super gold. They are just a piece of gold that you can wear to the left, right, or directly on top of the other gold you own.