The foundation of individual rights is the assumption that people have wants and needs and are authorities on what those wants and needs are. If people's stated desires were just some kind of erasable inscription or reprogrammable brainwashing, any atrocity could be justified.
Steven PinkerIf the myth of pure evil is that evil is committed with the intention of causing harm and an absence of moral considerations, then it applies to very few acts of so-called 'pure evil' because most evildoers believe what they are doing is forgivable or justifiable.
Steven PinkerPlants can't very well defend themselves by their behavior, so they resort to chemical warfare, and plants are saturated with toxins and irritants to deter creatures like us who want to eat them.
Steven Pinker