One of the prevailing ideologies from our past comes to us in the form of the slogan “Might is right”. It is the ideology of the strong taking what they can, what they deem to be rightfully theirs and attaining from those that have. It separates the haves and the have-nots. More poetically, Jack London would have called it the law of Club and Fang. Another form, although slightly different, comes to us from one of the greatest sophists of the 19th century.
Nietzsche writes in Beyond Good and Evil:
Physiologists should think twice before positioning the drive for self-preservation as the cardinal drive of an organic being. Above all, a living thing wants to discharge its strength — life itself is will to power -: self-preservation is only one of the indirect and most frequent consequences of this.
Source: The Maxim of Strength