There are five great ages of man - five moments when you need to reevaluate everything, clear out the cupboard and the wardrobe, and most importantly, your head. They are 13, 20, 30, 40 and 60. All men need to know this.

I am shy to admit that I have followed the advice given all those years ago by a wise archbishop to a bewildered young man: that moments of unbelief 'don't matter,' that if you return to a practice of the faith, faith will return.

Sometimes when it comes to the iconic kind of moments, when I read the script for the first time, you get little goose bumps or something because it really is kind of exciting.

You live for those pressure moments. Through an international career, you have ups and downs, but you always feel you are going to be tested in moments like that. It has taken me years to feel comfortable and to feel like I have good composure in those situations.

Whenever I visited China in the past, the relationships always felt superficial; there was no time where I felt those moments of conflict and delight that make you feel close to another person. But since I started touring there in 2004, I would always collaborate with local musicians, and that opened up a new level of intimacy.

There are moments as a teacher when I'm conscious that I'm trotting out the same exact phrase my professor used with me years ago. It's an eerie feeling, as if my old mentor is not just in the room, but in my shoes, using me as his mouthpiece.

My writing flows out of my doctorhood. They are not separate things. They are one. I think the foremost connection between being a doctor and being a writer is the great privilege of having an intimate view of one's fellow humans, the privilege of being there and helping other people at their most vulnerable moments.

I have always wanted to make a series of films which would be like an 'emotional history' that conveys what it feels like to live through history as an experience rather than a grand story. It would be about the relationship between the tiny fragments and moments of personal experience, and the continual backdrop of big events.