Hate begets hate, violence engenders violence, hypocrisy is answered by hypocrisy, war generates war, and love creates love.
Pitirim SorokinAny Organized social group is always a stratified social body. There has not been and does not exist any permanent social group which is "flat" and in which all members are equal.
Pitirim Sorokin[In-group exclusivism has] killed more human beings and destroyed more cities and villages than all the epidemics, hurricanes, storms, floods, earthquakes, and volcanic eruptions taken together. It has brought upon mankind more suffering than any other catastrophe.
Pitirim Sorokin