Every person's life has an intrinsic value regardless of circumstance. Whatever they themselves or other people may think of their 'value' to society, and despite any apparent lack of productivity or usefulness, nothing can alter their essential significance as human beings. To agree that some of us are more valuable than others when it comes to being alive would be to cross an ethical Rubicon.
The truth is our right to choose is widely curtailed for very good reasons. We're not free to drive as fast as we choose, or in what direction we choose, or to smoke wherever we choose. The reason is the public good, to protect the vulnerable. It's simply untrue that suicide affects no one else. Nor is it true that assisted dying is a purely personal matter.
Elephants have the longest known gestation period of any mammal, up to 680 days, but it's a long pregnancy worth waiting for.
2015 provides a unique opportunity for the world to think bigger and do better - for ourselves, our children and the world's poorest people. With the right leadership, ours is the generation that can wipe out extreme poverty, reduce inequality and tackle climate change.
Over the course of 2015, the international community will be refining and defining the Sustainable Development Goals. The 17 target areas of the SDGs have been widely agreed upon, but it is now time to turn these target areas into a workable set of goals.
Last week, I was at Somerset House, where the finals of Woolmark's menswear design competition took place as part of Men's Fashion Week. I had a bloodied "lamb" in tow to show people what's wrong with wearing wool. Everything about the production of wool is objectionable, especially the shearing process which often leaves sheep battered and bloodied...
The list of things which can go wrong in a young person's life is a long and ugly one. From a troubled home life featuring violence or emotional abuse, to bullying, health problems or being the caregiver for family members; young people are often carrying more than just the burden of growing up.
The reluctance of foreign leaders to compromise their energy interests by speaking out on the crackdown in Azerbaijan provides the armour Baku needs to protect itself from criticism over how it treats its citizens.
It is one of the great scandals of our time that in 2014 small-scale miners of such a precious metal should work in appalling, dangerous conditions for less than $1 a day. Because that is the sad truth hidden away deep underground.
The coldblooded murder of innocent civilians - no matter the nationality or circumstances - is always utterly appalling.
I find myself surprisingly calm. In part, it is because I continue to have a residual faith in the system, and I cannot believe, after 28 years, that Kris will not get justice today. He simply did not kill Derrick and Duane Moo Young, father and son, in Room 1215 of the Dupont Plaza Hotel back on October 16, 1986.
It is one thing for some of the world's leaders to march for freedom of expression. Well done that they did so, even if some of them were being more than a little hypocritical. But freedom of expression should be used to help build a more just and fair world. Let millions march for that too.
As the light dawns on a new year, so the great general election battle commences. Party leaders are out on the road, sparring over health, education and the deficit to lure undecided votes across the four corners of the UK.
It can no longer be ignored now that Syria's future generations are paying heavily for a catastrophe they did not create, one that is placing an obstacle to their present and future. These children are crying for help and it remains uncertain whether anyone is listening.
Political anoraks are going to love 2015, the most unpredictable election campaign in a generation. It's been at least 23 years since we last had a General Election campaign as difficult to predict as this one.
Responsible for fomenting chaos and carnage beyond their own borders, while at home brutalising their own people, surely it is time for the international community to turn its attention to the Saudis and their utter and complete disregard for anything resembling human rights...