C.F. Volney

All the social virtues are only the habitude of actions useful to society and to the individual who practices them; That they refer to the physical object of man’s preservation; That nature having implanted in us the want of that preservation, has made a law to us of all its consequences, and a crime of everything that deviates from it; That we carry in us the seed of every virtue, and of every perfection; That it only requires to be developed; That we are only happy inasmuch as we observe the rules established by nature for the end of our preservation; And that all wisdom, all perfection, all law, all virtue, all philosophy, consist in the practice of these axioms founded on our own organization:

Preserve thyself; Instruct thyself; Moderate thyself; Live for thy fellow citizens, that they may live for thee.

Volney, The Law of Nature, conclusion.