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.

Some statements concern the conscious states of the animal, what he is to himself as an inner life; others concern his original and acquired ways of response, his behavior, what he is an outside observer.

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.

The un-conscious distortion of the facts is almost harmless compared to the unconscious neglect of an animal’s mental life until it verges on the unusual and marvelous.

Colors fade, temples crumble, empires fall, but wise words endure.

All that exists, exists in some amount and can be measured.

Whatever exists at all exists in some amount. To know it thoroughly involves knowing its quantity as well as its quality.

It will of course, be understood that directly or indirectly, soon or late, every advance in the sciences of human nature will contribute to our success in controlling human nature and changing it to the advantage of the common wheel.

He who learns and runs away, lives to learn another day.

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.