When we imagine our Universe to be just one out of a multitude of possible worlds we devalue this world, the one we see, the one we should be trying to explain.

The Amazon is not just a set of trees. It is a set of 25 million people. If we don't create real economic opportunities for them, the practical result is to encourage disorganized economic activities that results in the further destruction of the rain forest.

In a world of democracies, the most deserving basis of national differences is that the different states of the world should represent a form of moral specialisation within humanity.

When we imagine our Universe to be just one out of a multitude of possible worlds we devalue this world, the one we see, the one we should be trying to explain.

The scientist should treasure the riddles he can't solve, not explain them away at the outset.

I regard myself as a man without charm in a country of charmers.

One of the striking features of the form of globalisation that has now been established is that it is based on the premise that goods and even capital should be free to roam but labour must remain imprisoned within the nation state.