“My choice is the old world — my choice, my need, my life.”

Final lines of his Richard Dimbleby lecture Shaking Hands With Death on euthanasia and assisted suicide, quoted in "Terry Pratchett: my case for a euthanasia tribunal" in The Guardian (2 February 2010) http://www.guardian.co.uk/society/2010/feb/02/terry-pratchett-assisted-suicide-tribunal
General sources
Context: I dare say that quite a few people have contemplated death for reasons that much later seemed to them to be quite minor. If we are to live in a world where a socially acceptable "early death" can be allowed, it must be allowed as a result of careful consideration.
Let us consider me as a test case. As I have said, I would like to die peacefully with Thomas Tallis on my iPod before the disease takes me over and I hope that will not be for quite some time to come, because if I knew that I could die at any time I wanted, then suddenly every day would be as precious as a million pounds. If I knew that I could die, I would live. My life, my death, my choice.

With his arms round her, with the sudden new sweetness of his face against hers, she was filled with an exultant richness of living.
Death Comes as the End (1945)

from 'About the Author' by Charles King, Treasures of the Confederate Coast: the 'Real Rhett Butler' & Other Revelations by Dr. E. Lee Spence (Narwhal Press, Charleston/Miami, 1995), p. 517.

Source: Trusting Soul

Print ad for People for the Ethical Treatment of Animals, in “Lamb of God’s Chris Adler is Vegetarian,” Peta2.com (20 July 2011) https://www.peta2.com/news/lamb-of-gods-chris-adler/.

On deciding to date Jessica Simpson
(February 10, 2010), "John Mayer: Playboy Interview" http://www.playboy.com/articles/john-mayer-playboy-interview/index.html?page=1 Playboy. Retrieved February 10, 2010.

Source: Cold Days

Source: The 7 Habits of Highly Effective People: Powerful Lessons in Personal Change