Human folk are as a matter of fact eager to find intelligence in animals.

Nowhere more truly than in his mental capacities is man a part of nature.

All that exists, exists in some amount and can be measured.

From the lowest animals of which we can affirm intelligence up to man this type of intellect is found.

When, instead of merely associating some act with some situation in the animal way, we think the situation out, we have a set of particular feelings of its elements.

It will of course, be understood that directly or indirectly, soon or late, every advance in the sciences of human nature will contribute to our success in controlling human nature and changing it to the advantage of the common wheel.

For origin and development of human faculty we must look to these processes of association in lower animals.