A person who knows all the answers, has an opinion on everything, has a certainty backed up by rational argument, has very little possibility of further progress. Such a person is unlikely to walk away from a discussion with anything more than a reaffirmation of how right he or she has been all along.

The purpose of art is to reflect new emerging values and to define the new heroes and heroines so that people can absorb them into their perceptions.

I think school is a place where thinking should be taught.

On trade, our hypocrisy is at its most appalling. Trade reform isn't about charity, it's about justice, and this campaign, Trade Justice is an unstoppable idea.

The power of a car is separate from the way the car is driven.

(...) being right all the time acquires a huge importance in education, and there is this terror of being wrong. The ego is so tied to being right that later on in life you are reluctant to accept that you are ever wrong, because you are defending not the idea but your self-esteem. (...) this terror of being wrong means that people have enormous difficulties in changing ideas.

Don't criticise a hypothesis, come up with a better one.