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.

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

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

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

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.