The success in fighting which is achieved by suppressing freedom of thought is brief and very worthless. In the long run mental vigor is as essential to success as it is to a good life. The conception of education as a form of drill, a means of producing unanimity through slavishness, is very common, and is defended chiefly on the ground that it leads to victory. Those who enjoy parallels from ancient history will point to the victory of Sparta over Athens to enforce their moral. But it is Athens that has had power over men’s thoughts and imaginations, not Sparta: any one of us, if we could be born again into some past epoch, would rather be born an Athenian than a Spartan. And in the modern world so much intellect is required in practical affairs that even the external victory is more likely to be won by intelligence than by docility. Education in credulity leads by quick stages to mental decay; it is only by keeping alive the spirit of free inquiry that the indispensable minimum of progress can be achieved. Certain mental habits are commonly instilled by those who are engaged in educating: obedience and discipline, ruthlessness in the struggle for worldly success, contempt towards opposing groups, and an unquestioning credulity, a passive acceptance of the teacher’s wisdom. All these habits are against life. Instead of obedience and discipline, we ought to aim at preserving independence and impulse. Instead of ruthlessness, education should try to develop justice in thought. Instead of contempt, it ought to instil reverence, and the attempt at understanding; towards the opinions of others it ought to produce, not necessarily acquiescence, but only such opposition as is combined with imaginative apprehension and a clear realization of the grounds for opposition. Instead of credulity, the object should be to stimulate constructive doubt, the love of mental adventure, the sense of worlds to conquer by enterprise and boldness in thought. Contentment with the _status quo_, and subordination of the individual pupil to political aims, owing to the indifference to the things of the mind, are the immediate causes of these evils; but beneath these causes there is one more fundamental, the fact that education is treated as a means of acquiring power over the pupil, not as a means of nourishing his own growth. It is in this that lack of reverence shows itself; and it is only by more reverence that a fundamental reform can be effected.