On the whole, the psychological work of the last quarter of the nineteenth century emphasized the study of consciousness to the neglect of the total life of intellect and character

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

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

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

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

Human beings are accustomed to think of intellect as the power of having and controlling ideas and of ability to learn as synonymous with ability to have ideas. But learning by having ideas is really one of the rare and isolated events in nature.