Just as the natural environment depends on biodiversity, so the human environment depends on cultural diversity, because no one civilization encompasses all the spiritual, ethical and artistic expressions of mankind.

If we are to negotiate the coming years safely, we may need a new kind of leadership. To put it more precisely, we need the rediscovery of an ancient kind of leadership that has rarely been given the prominence it deserves. I mean the leader as teacher.

Since Hiroshima and the Holocaust, science no longer holds its pristine place as the highest moral authority. Instead, that role is taken by human rights. It follows that any assault on Jewish life - on Jews or Judaism or the Jewish state - must be cast in the language of human rights.

Since the 18th century, many Western intellectuals have predicted religion's imminent demise.

Food prices are often kept artificially high. The result is that the Millennium Development Goals set out by the United Nations at the start of the new millennium are not being reached. Fine words have not yet been turned into deeds.

When everything that matters can be bought and sold, when commitments can be broken because they are no longer to our advantage, when shopping becomes salvation and advertising slogans become our litany, when our worth is measured by how much we earn and spend, then the market is destroying the very virtues on which in the long run it depends.

Find people not to envy but to admire. Do not the profitable but the admirable deed. Live by ideals.