The more aggressive our ideologies become, the more aggressive our discourse whether it's in the United States, from Washington D.C., or whether it's from Tehran, or from some underground Al-Qaeda cell. The more aggressive that discourse is, the more people of moderate persuasion have to organize and speak a voice of compassion. That means to feel with the other.

Today we often think that before we start living a religious life we have first to accept the creedal doctrines and that before one can have any comprehension of the loyalty and trust of faith, one must first force one's mind to accept a host of incomprehensible doctrines. But this is to put the cart before the horse.

Compassion has been advocated by all the great faiths because it has been found to be the safest and surest means of attaining enlightenment. It dethrones the ego from the center of our lives and puts others there, breaking down the carapace of the selfishness that holds us back from an experience of the sacred. And it gives us ecstasy, broadening our perspectives and giving us a larger, enhanced vision.

Often when religious leaders come together, they talk about a particular sexual ethic, or an abstruse doctrine, as though this, rather than compassion, was the test of spiritual life.

It is people who are violent, rather than "religions"; and since we secularised our politics we have had two major world wars, the Holocaust, the Soviet Gulag, and the atomic attacks on Hiroshima and Nagasaki - none of which were inspired by religion. If we want to understand the dangers of our world, we can no longer accept the old received ideas.

Whatever conclusions we reach about the reality of God, the history of this idea must tell us something important about the human mind and the nature of our aspiration.

Compassion is aptly summed up in the Golden Rule, which asks us to look into our own hearts, discover what gives us pain, and then refuse, under any circumstance whatsoever, to inflict that pain on anybody else. Compassion can be defined, therefore, as an attitude of principled, consistent altruism.