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.

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

Nowhere more truly than in his mental capacities is man a part of nature.

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.

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

From the lowest animals of which we can affirm intelligence up to man this type of intellect is found.

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.