No place, no company, no age, no person is temptation-free; let no man boast that he was never tempted, let him not be high-minded, but fear, for he may be surprised in that very instant wherein he boasteth that he was never tempted at all.

The law is the survival of the fittest.... The law is not the survival of the 'better' or the 'stronger,' if we give to those words any thing like their ordinary meanings. It is the survival of those which are constitutionally fittest to thrive under the conditions in which they are placed; and very often that which, humanly speaking, is inferiority, causes the survival.

Reading is seeing by proxy.

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.

In assuming any office besides its essential one, the State begins to lose the power of fulfilling its essential one.

Opinion is ultimately determined by the feelings, and not by the intellect.