In it, her father concluded that the concept of happiness can't apply to God and that, as long as pain and death are in the world, it can't apply to humans either.

WSJ: Book Review: Is God Happy?

It is often argued that the distinction between curing and killing is blurred in any case: doctors frequently prescribe increasing doses of opiates which, as well as relieving pain, will advance the death of a patient.

ECONOMIST: The right to choose to die

In August 2005, to end the "pain and misery" of her condition, she attempted to starve herself to death as an act of voluntary euthanasia.

BBC: Assisted suicide campaigner Kelly Taylor dies