Psychology is the science of the intellects, characters and behavior of animals including man.

Just as the science and art of agriculture depend upon chemistry and botany, so the art of education depends upon physiology and psychology.

Amongst the minds of animals that of man leads, not as a demigod from another planet, but as a king from the same race.

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.

Psychology helps to measure the probability that an aim is attainable.

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