Instructor in Sanitary Chemistry, Massachusetts Institute of Technology. 1905

THE HOUSEHOLD EXISTS FOR ONE OR MORE OF THE FOLLOWING REASONS:

Two or more persons form an alliance

for protection against the outside world;

for protection against the outside world and for the rearing of children;

for the greater gain in convenience which the common life can give over that of single effort;

for companionship;

for the greater independence it gives to the group;

for the greater ease in satisfying one's prejudices or whims.