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Classification of the Sci.
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here to take the word is a deliberate course of inquiry. As such, it is animated by a purpose. Now every purpose has its root in a desire, and every desire is the outcome of an instinct. The instincts of every animal appear to have fro their quasi-purpose the preservation of the race to which that animal belongs and this in one or other of two ways,

1st, by preserving the individual alive,

2nd, by leading to his producing offspring.

We may say, therefore, that the two typical instincts are the instinct relating to food and the instinct relating to reproduction. This, however, is too narrow a statement to serve our purpose. There are instincts unrelated to food which tend to preserve the life of the individual, such as that of self-defense; and there are instincts unrelated to reproduction which tend to preserve the race, such as the moral and political instincts. There are instincts which serve both purposes, such as those of clothing and a home;