The great thing about being the only species that makes a distinction between right and wrong is that we can make up the rules for ourselves as we go along.

The speaker turns a claim about human moral judgment into a joke about convenience. Being able to distinguish right from wrong supposedly also lets people invent the rules as they proceed. The cheerful opening makes the self-serving conclusion sharper, suggesting a gap between moral authority and consistent standards.

Context reviewed 20 September 2026