There is no such thing as "natural law": this expression is nothing but old nonsense... Prior to laws, what is natural is only the strength of the lion, or the need of the creature suffering from hunger or cold, in short, need.
StendhalThe pleasures and the cares of the luckiest ambition, even of limitless power, are nothing next to the intimate happiness that tenderness and love give. I am man before being a prince, and when I have the good fortune to be in love, my mistress addresses a man and not a prince.
Stendhal