This is a quote from the book "The Virtue Of Selfishness" by Ayn Rand
...h one another, they may do so only by means of reason : by discussion, persuasion and voluntary, uncoerced agreement.
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The necessary consequence of man’s right to life is his righ
t 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 ...