“I'm going to put death in all their food and watch them die.”

Variant: Human beings can’t see anything without wanting to destroy it, Lyra. That’s original sin.
Source: His Dark Materials, The Golden Compass (1995), Ch. 21 : Lord Asriel's Welcome

"Riding the Tour De Vegetable" https://www.wsj.com/articles/SB10001424052702304314404576414124184873028, interview with The Wall Street Journal (29 June 2011).

2010-, The City: Beijing, 2011

In the loneliness of my life, my father dead, my brother dead, my mother far away, my sister and my wife far away, nothing here but my own tragic hands that once were guarded by a world, a sweet attention, that now are left to guide and disappear their own way into the common dark of all our death, sleeping in me raw bed, alone and stupid...
Visions of Cody (1960)

Interviewed in Los Angeles on the occasion of her 75th birthday, December 1976, as quoted in Newsweek Vol. 88, p. 157
1970s

As quoted in "Stephen Hawking: 'There is no heaven; it's a fairy story'" by Ian Sample, in The Guardian (15 May 2011) http://www.theguardian.com/science/2011/may/15/stephen-hawking-interview-there-is-no-heaven
Context: I have lived with the prospect of an early death for the last 49 years. I'm not afraid of death, but I'm in no hurry to die. I have so much I want to do first... I regard the brain as a computer which will stop working when its components fail. There is no heaven or afterlife for broken down computers; that is a fairy story for people afraid of the dark.

Source: Rise of the Evening Star