If you wish to prosper, let your customer prosper. When people have learned this lesson, everyone will seek his individual welfare in the general welfare. Then jealousies between man and man, city and city, province and province, nation and nation, will no longer trouble the world.

There is not a tool, an implement, or a machine that has not resulted in a decrease in the contribution of human labor. Labor is not made permanently idle [though]; when replaced in one special category... it turns its attack against other obstacles on the main road to progress.

I believe that my theory is correct; for whatever be the question upon which I am arguing, whether it be religious, philosophical, political, or economical; whether it affects well-being, morality, equality, right, justice, progress, responsibility, property, labor, exchange, capital, wages, taxes, population, credit, or Government; at whatever point of the scientific horizon I start from, I invariably come to the same thing—the solution of the social problem is in liberty.

It is not true that the legislator has absolute power over our persons and property, since they pre-exist, and his work is only to secure them from injury. It is not true that the mission of the law is to regulate our consciences, our ideas, our will, our education, our sentiments, our works, our exchanges, our gifts, our enjoyments. Its mission is to prevent the rights of one from interfering with those of another, in any one of these things.

This question of legal plunder must be settled once and for all, and there are only three ways to settle it: (1) The few plunder the many. (2) Everybody plunders everybody. (3) Nobody plunders anybody.

In short, is not liberty the freedom of every person to make full use of his faculties, so long as he does not harm other persons while doing so?

...the statement, "The purpose of the law is to cause justice to reign," is not a rigorously accurate statement. It ought to be stated that the purpose of the law is to prevent injustice from reigning. In fact, it is injustice, instead of justice, that has an existence of its own. Justice is achieved only when injustice is absent.