Whoever has a slight knowledge of history and a fairly clear head knows perfectly well from the beginning that theoretical propaganda for revolution … - Peter Kropotkin

Relatively speaking, law is a product of modern times. For ages and ages mankind lived without any written law, even that graved in symbols upon the entrance stones of a temple. During that period, human relations were simply regulated by customs, habits, and usages, made sacred by constant repetition, and acquired by each person in childhood, exactly as he learned how to obtain his food by hunting, cattle-rearing, or agriculture. All human societies have passed through this primitive phase, and to this day a large proportion of mankind have no written law. Every tribe has its own manners and customs; customary law, as the jurists say. It has social habits, and that suffices to maintain cordial relations between the inhabitants of the village, the members of the tribe or community. Even amongst ourselves — the "civilized" nations — when we leave large towns, and go into the country, we see that there the mutual relations of the inhabitants are still regulated according to ancient and generally accepted customs, and not according to the written law of the legislators.

When a revolutionary situation arises in a country, before the spirit of revolt is sufficiently awakened in the masses to express itself in violent demonstrations in the streets or by rebellions and uprisings, it is through action that minorities succeed in awakening that feeling of independence and that spirit of audacity without which no revolution can come to a head. Men of courage, not satisfied with words, but ever searching for the means to transform them into action, — men of integrity for whom the act is one with the idea, for whom prison, exile, and death are preferable to a life contrary to their principles, — intrepid souls who know that it is necessary to dare in order to succeed, — these are the lonely sentinels who enter the battle long before the masses are sufficiently roused to raise openly the banner of insurrection and to march, arms in hand, to the conquest of their rights.

As man does not live in a solitary state, habits and feeling develop within him which are useful for the preservation of society and the propagation of the race. Without social feelings and usages life in common would have been absolutely impossible. It is not law which has established them; they are anterior to all law. Neither is it religion which has ordained them; they are anterior to all religions. They are found amongst all animals living in society. They are spontaneously developed by the new nature of things, like those habits in animals which men call instinct. They spring from a process of evolution, which is useful, and, indeed, necessary, to keep society together in the struggle it is forced to maintain for existence.