This is not about charity, it's about justice... The war against terror is bound up in the war against poverty - I didn't say that, Colin Powell said that . . .

You do not go out into the street in your underwear, although usually you are wearing underwear. The underwear is not visible but it is there all the time. It is the same with concepts. They are there. They underlie practical things we do- even when we are not conscious of them.

Argument is meant to reveal the truth, not to create it.

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.

Complexity creates confusion, simplicity focus.

We may need to solve problems not by removing the cause but by designing the way forward even if the cause remains in place.

(...) 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.