happen to be fashionable. In more remote ages they have been still more profoundly modified by religious and social ideas; polygamy and polyandry, the custom of marrying only inside one's own caste, or only outside it, all these various and contradictory plans have been easily accepted at some place and some time, and have offered no more conscious obstacle to the free play of love than among ourselves is offered by the prohibition against marriage between near relations.
Those simple-minded people who talk about the blind and irresistible force of passion are themselves blind to very ordinary psychological facts.
Passion—when it occurs—requires in normal persons cumulative and prolonged forces to impart to it full momentum.
11In its early stages it is under the control of many influences, including influences of reason. If it were not so there could be no