The day in 2004 when the radiologist told me I had invasive cancer, I walked down the hospital corridor looking for a phone to call my husband, and I could almost see the fear coming toward me like a big, black shadow.

Sydney in the 1960s wasn't the exuberant multicultural metropolis it is today. Out in the city's western reaches, days passed in a sun-struck stupor. In the evenings, families gathered on their verandas waiting for the 'southerly buster' - the thunderstorm that would break the heat and leave the air cool enough to allow sleep.

You can't write about the past and ignore religion. It was such a fundamental, mind-shaping, driving force for pre-modern societies. I'm very interested in what religion does to us - its capacity to create love and empathy or hatred and violence.

Book burnings. Always the forerunners. Heralds of the stake, the ovens, the mass graves.

And at this moment in history, our core value happens to be the raw, aching truth of the human predicament. It may also be the only belief that can save us as a species. A species that will continue to find comfort and delight in the companionship of animals, the miracle of birds, the colours of the corals and the majesty of the forests. We are in it together, on this blue spinning marble in the cold and silent void. And we must act on that belief, if we are going to be able to continue to live a good life here, in this beautiful and fragile country, on this lovely planet, our only home.

There are always a few who stand up in times of communal madness and have the courage to say that what unites us is greater than what divides us.

For most people, chemotherapy is no longer the chamber of horrors we often conceive it to be. Yes, it is an ordeal for some people, but it wasn't for me, nor for most of the patients I got to know during my four months of periodic visits to the chemo suite.