The most important purpose that political institutions can achieve is to keep alive in individuals creativeness, vigor, vitality, and the joy of life. These things existed, for example, in Elizabethan England in a way in which they do not exist now. They stimulated adventure, poetry, music, fine architecture, and set going the whole movement out of which England’s greatness has sprung in every direction in which England has been great. These things coexisted with injustice, but outweighed it, and made a national life more admirable than any that is likely to exist under socialism. What is wanted in order to keep men full of vitality is opportunity, not security. Security is merely a refuge from fear; opportunity is the source of hope. The chief test of an economic system is not whether it makes men prosperous, or whether it secures distributive justice (though these are both very desirable), but whether it leaves men’s instinctive growth unimpeded. To achieve this purpose, there are two main conditions which it should fulfil: it should not cramp men’s private affections, and it should give the greatest possible outlet to the impulse of creation. There is in most men, until it becomes atrophied by disuse, an instinct of constructiveness, a wish to make something. The men who achieve most are, as a rule, those in whom this instinct is strongest: such men become artists, men of science, statesmen, empire-builders, or captains of industry, according to the accidents of temperament and opportunity. The most beneficent and the most harmful careers are inspired by this impulse. Without it, the world would sink to the level of Tibet: it would subsist, as it is always prone to do, on the wisdom of its ancestors, and each generation would sink more deeply into a lifeless traditionalism.