For the soundest of evolutionary reasons man appears at his best when times are worst.
Aggressiveness is the principal guarantor of survival.
Natural selection deals ruthlessly with any population, bird or beaver, which fails to solve the problems of its environment with all those resources, learned or unlearned, which may be at its disposal.
What truly leads the evolutionary procession, in other words, is behavior.
A human being is a problem in search of a solution.
What could not be denied was that in vast segments of the animal world natural selection of the most qualified individuals took place not by competition for females but by competition for space.