The evil of the world is made possible by nothing but the sanction you give it.
Ayn Rand, Atlas Shrugged, 1957
The spread of evil is the symptom of a vacuum. whenever evil wins, it is only by default: by the moral failure of those who evade the fact that there can be no compromise on basic principles.
Ayn Rand, Capitalism: The Unknown Ideal, 1966
The Argument from Intimidation is a confession of intellectual impotence.
Ayn Rand, The Virtue of Selfishness, 1964