This is the script of this morning's Pause for Thought on BBC Radio 2's Chris Evans Show with Eric Bana, Rick Astley, Cyndi Lauper, Daisy Waterstone and Callum Woodhouse:

I realise this might come as a bit of a shock, but I need to tell you: I don't have a tattoo. I'm beginning to think this makes me a bit weird, but so far the only needles to have got under my skin have been medicinal ones.

But … (a question put to me last week) if I was going to have one, what would it be: image or words? Now, that got me thinking. If I had just one thing to be my identifying feature (as it were) – the thing that really gets under my skin -, what would I want the world to see? Now, that's hard, isn't it?

OK. I wouldn't want something merely aspirational or something exotic in Sanskrit that I am told means 'romantic hero' but actually means 'idiot'. And I wouldn't want an image that might stretch or shrink with age and end up looking like something it shouldn't. I think I'd want something real. Something that showed my true colours.

One of my heroes – not the Hulk exactly – is a guy who thought he was a big man – leader of the pack – only to find he melted when the heat was on. His illusions about himself led to him promising his best friend that he would never give him up to the authorities and would never let him down, but caved in remarkably quickly. His name was Peter and his mate was Jesus of Nazareth. And his failure set him free never again to have to pretend to be what he was not – the failure wasn't the end of the world, after all.

So, maybe my tattoo ought to just portray a face – eyes that are open and unafraid, knowing from experience that we don't have to be trapped by our reputation or the illusions about ourselves that we too often try so hard to protect.

Or, maybe I ought just to relax, and have the words of Psalm 139 etched into my epidermis: “Oh Lord, you have searched me and known me” … because that freedom sets me free to be loved and, thus, to love, never to give up.

But, maybe I don't need body art to tell me that, after all.