One of the most destructive anti-concepts in the history of moral philosophy is the term 'duty.
Ayn RandJust as man can't exist without his body, so no rights can exist without the right to translate one's rights into reality, to think, to work and keep the results, which means: the right of property.
Ayn RandYou love people, not for what you do for them or what they do for you. You love them for their values; their virtues.
Ayn Rand