This section is from the book "Principles Of Sociology With Educational Applications", by Frederick R. Clow. Also available from Amazon: Principles of sociology with educational applications.
There is no way of coming at a true theory of society, but by inquiring into the nature of its component individuals. To understand humanity in its combinations, it is necessary to analyse that humanity in its elementary form - for the explanation of the compound, to refer back to the simple. We quickly find that every phenomenon exhibited by an aggregation of men, originates in some quality of man himself. - Spencer, Social Statics, ist ed., p. 28.
Civilization represents the diversified issue of the play and sway of human qualities. . . .
. . . For the whole of human conduct, as of civilization, follows the clew of the endowment, needs, satisfactions, potencies, aspirations of the human mind. - Jastrow, Character and Temperament, pp. 38, ix.