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

He who learns and runs away, lives to learn another day.

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.

The un-conscious distortion of the facts is almost harmless compared to the unconscious neglect of an animal's mental life until it verges on the unusual and marvelous.

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

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

The real difference between a man's scientific judgments about himself and the judgment of others about him is he has added sources of knowledge.