Fifty years of isolating Cuba had failed to promote democracy, setting us back in Latin America. That's why we restored diplomatic relations, opened the door to travel and commerce, and positioned ourselves to improve the lives of the Cuban people.

I would like people to appreciate science in the same way they appreciate the arts.

To assert in any case that a man must be absolutely cut off from society because he is absolutely evil amounts to saying that society is absolutely good, and no-one in his right mind will believe this today.

The greatest compliment that was ever paid me was when one asked me what I thought, and attended to my answer.

I soothe my conscience now with the thought that it is better for hard words to be on paper than that Mummy should carry them in her heart.