What is the basic, the essential, the crucial principle that differentiates freedom from slavery? It is the principle of voluntary action versus physical coercion or compulsion.
Ayn RandDoctors are not servants of their patients, they are traders like everyone else in a free society and they should bear that title proudly considering the crucial importance of the services they offer.
Ayn RandWhen you see that trading is done, not by consent, but by compulsion - when you see that in order to produce, you need to obtain permission from men who produce nothing - when you see that money is flowing to those who deal, not in goods, but in favors - when you see that men get richer by graft and by pull than by work, and your laws don't protect you against them, but protect them against you - when you see corruption being rewarded and honesty becoming a self-sacrifice - you may know that your society is doomed.
Ayn RandEverything has strings leading to everything else. We're all so tied together. We're all in a net, the net is waiting, and we're pushed into it by one single desire. You want a thing and it's precious to you. Do you know who is standing ready to tear it out of your hands? You can't know, it may be so involved and so far away, but someone is ready, and you're afraid of them all. And you cringe and you crawl and you beg and you accept them--just so they'll let you keep it. And look at whom you come to accept.
Ayn RandThe necessary consequence of man's right to life is his right to self-defense. In a civilized society, force may be used only in retaliation and only against those who initiate its use. All the reasons which make the initiation of physical force an evil, make the retaliatory use of physical force a moral imperative. If some "pacifist" society renounced the retaliatory use of force, it would be left helplessly at the mercy of the first thug who decided to be immoral. Such a society would achieve the opposite of its intention: instead of abolishing evil, it would encourage and reward it.
Ayn Rand