"Whatever we say about [wild animal suffering], it shows us once again that the positive/negative distinction cannot be maintained in anything like its classical form. Humans are intervening in animals' lives all the time, and the question can only be what form this intervention should take. An intelligently respectful paternalism is vastly superior to neglect."
January 1, 1970
https://en.wikiquote.org/wiki/Wild_animal_suffering