inevitably on. Witchcraft trials
and the tortures of the Spanish Inquisition belong among the more
mentionable consequences of some of man's theories about his own
nature and its requirements.

Heretofore the imaginative spirit has had its day in the matter. And,
curiously enough, an obsession to subjugate the natural has made it
exalt the supernatural. Visions, dreams, portents, revelations, all
symptomatic of an order of things above nature, are the stuff of what
more than ninety-nine per cent of the millions of the race believe
about themselves and their fate. Man's cruelty to man, through the
ages, is a comment upon how vast and ramifying may be the consequences
of a delusion.

But now for a couple of centuries the critical spirit, which is the
spirit of science, has been invading the affairs of men. Humble but
persistent corrosive of delusion, it has infiltrated the furthest
bounds of ignorance and superstition. It has not dared to assert the
supremacy of its fundamental views upon the everyday problems of human
life because it was without concrete means of vindicating its claims.
That lack is now supplied by the growing understanding of the chemical
factors as the controllers and dictators of all the legion aspects of
life.

The profoundest achievement of the physiologist will be the change his
teachings and discoveries will bring about in man's attitude toward
himself. When he comes to realize himself as a chemical machine that
can, within limits, be remodeled, overhauled and repaired, as an
automobile can be, within limits, when he becomes saturated with the
significance of his endocrine-vegetative system at every turn and move
of his life, and when sympathy and pity informed by knowledge and
understanding will come to regulate his relationships with the lowest
and most despised of the men, women and children about him, the era of
the first real civilization will properly be said to be born.

Morality, as society's code of conduct for its members, will have
to change in the direction of a greater flexibility with the
establishment of organic differences in human types. There is nothing
that is more emphasized to the pathologist than that one man's meat is
another man's poison. In the family, as nature's laboratory for
the manufacture of fresh combinations of the internal secretions,
allowances will be made for divergences in capacity and deportment
from a new angle altogether. Schools will function as the