If I am lucky, something new and inexplicable often appears in front of my lens. I am always surprised by the mystery of how my best images appear. That excitement and shock of discovery makes my life at these moments a gift.

I have the same themes over and over again. How I'm saying it keeps changing or growing.

Over the years I have photographed thousands of people. I have never stopped being curious and trying to discover new worlds. I have used my camera as a mirror for my subjects as well. I remember photographing a woman in her 80s for my book, Wise Women, who told me it had been a long time since anyone had really been interested in "seeing" or photographing her. When she saw the picture, she burst into tears. She saw something in the photograph, an inner beauty and soul, she felt had long ago vanished.

I very strongly believe that if you go back to your roots, if you mine that inner territory, you can bring out something that is indelibly you and authentic - like your thumbprint. It's going to have your style because there is no one like you.

The most important thing is to try and enjoy life because you never know when it will be gone. If you wake up in the morning and have a choice between doing the laundry and taking a walk in the park, go for the walk. You'd hate to die and realize you had spent your last day doing the laundry.

I try to neutralize my figures; I want them to be mythic and timeless. I want them to exist beyond time. I've used the skull caps or cowls to banish hair, which is distracting. I want to isolate the face and concentrate on what is really going on deep within my subjects.

I want to allow others to reveal and celebrate aspects of themselves that are usually hidden. My camera is a witness. It holds a light up for my subjects to help them feel their own essence, and gives them the courage to collaborate in the recording of these revelations.