Actions are right in proportion as they tend to promote happiness； wrong as they tend to produce the reverse of happiness.
Virtues are acquired through endeavor, which rests wholly upon yourself.
The stranger is an element of the group itself, not unlike the poor and sundry 'inner enemies'—an element whose membership within the group involves both being outside it and confronting it.
If you don't believe in yourself, no one else will.
The existence of a legal system depends on the acceptance of secondary rules by officials.