The laws of biology are the fundamental lessons of history. We are subject to the processes and trials of evolution, to the struggle for existence and the survival of the fittest to survive. If some of us seem to escape the strife or the trials it is because our group protects us; but that group itself must meet the tests of survival.
Life is competition. Competition is not only the life of trade, it is the trade of life — peaceful when food abounds, violent when the mouths outrun the food.
Life is selection. In the competition for food or mates or power some organism succeed and some fail. In the struggle for existence some individuals are better equipped than others to meet the tests of survival.
Nature loves difference as the necessary material of selection and evolution.
Economic development specializes functions, differentiates abilities, and makes men unequally valuable to their peer group.
Freedom and equality are everlasting enemies. Leave men free, and their natural inequalities will multiply almost geometrically. To check the growth of inequality, liberty must be sacrificed.
Utopias of equality are biologically doomed. A society in which all potential abilities are allowed to develop and function will have a survival advantage in the competition of groups.
Drurant, W. (2012). The Lessons of History. Simon & Schuster.