Human education is concerned with certain changes in the intellects, characters and behavior of men, its problems being roughly included under these four topics: Aims, materials, means and methods.

The intellectual evolution of the race consists in an increase in the number, delicacy, complexity, permanence and speed of formation of such associations.

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

So the animal finally performs in that situation only the fitting act.

Dogs get lost hundreds of times and no one ever notices it or sends an account of it to a scientific magazine.

The restriction of studies of human intellect and character to studies of conscious states was not without influence on a scientific studies of animal psychology.

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