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.

To the intelligent man with an interest in human nature it must often appear strange that so much of the energy of the scientific world has been spent on the study of the body and so little on the study of the mind.

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.

There is no reasoning, no process of inference or comparison; there is no thinking about things, no putting two and two together; there are no ideas - the animal does not think of the box or of the food or of the act he is to perform.

The real man is one who always finds excuses for others, but never excuses himself.

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