We must treat the world with greater respect. All our actions matter. Please don’t litter.
“Do not confuse duty with what other people expect of you. They are utterly different. Duty is a debt you owe to yourself to fulfill obligations you have assumed voluntarily. Paying that debt can entail anything from years of patient work to instant willingness to die. Difficult it may be, but the reward is self-respect.”
Robert A. Heinlein