The hajj is one of the five essential practices of Islam; when they make the pilgrimage to Mecca, Muslims ritually act out the central principles of their faith.

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.

Religion is not about accepting twenty impossible propositions before breakfast, but about doing things that change you. It is a moral aesthetic, an ethical alchemy. If you behave in a certain way, you will be transformed.

The study of the traditions doesn't necessarily make you want to convert to another tradition, but it helps you to see your own differently and expands your outlook.

I think I get from my books what other people get from family or a relationship or from prayer.

After a time I found that I could almost listen to the silence, which had a dimension all of its own. I started to attend to its strange and beautiful texture, which of course, it was impossible to express in words. I discovered that I felt at home and alive in the silence, which compelled me to enter my interior world and around there. Without the distraction of constant conversation, the words on the page began to speak directly to my inner self. They were no long expressing ideas that were simply interesting intellectually, but were talking directly to my own yearning and perplexity.

People knew there were two ways of coming at truth. One was science, or what the Greeks called Logos, reason, logic. And that was essential that the discourse of science or logic related directed to the external world. The other was mythos, what the Greeks called myth, which didn't mean a fantasy story, but it was a narrative associated with ritual and ethical practice but it helped us to address problems for which there were no easy answers, like mortality, cruelty, the sorrow that overtakes us all that's part of the human condition. And these two were not in opposition, we needed both.