Science is organized knowledge.

Whatever fosters militarism makes for barbarism; whatever fosters peace makes for civilization.

Any piece of knowledge which the pupil has himself acquired- any problem which he has himself solved, becomes, by virtue of the conquest, much more thoroughly his than it could else be. The preliminary activity of mind which his success implies, the concentration of thought necessary to it, and the excitement consequent on his triumph, conspire to register the facts in his memory in a way that no mere information heard from a teacher, or read in a schoolbook, can be registered.

The fact disclosed by a survey of the past that majorities have been wrong must not blind us to the complementary fact that majorities have usually not been entirely wrong.

No physiologist who calmly considers the question in connection with the general truths of his science, can long resist the conviction that different parts of the cerebrum subserve different kinds of mental action. Localization of function is the law of all organization whatever: separateness of duty is universally accompanied with separateness of structure: and it would be marvellous were an exception to exist in the cerebral hemispheres.

Government is essentially immoral. The State employs evil weapons to subjugate evil, and is alike contaminated by the objects with which it deals, and the means by which it works.

In the supremacy of self-control consists one of the perfections of the ideal man.