For Rousseau and Mandeville the absence of a moral instinct meant the laws of society had no moral validity, they were nothing but the inventions of the cunning and the powerful, in order to maintain or to acquire an unnatural and unjust superiority over the rest of their fellow creatures.
Gertrude HimmelfarbAs liberty of thought is absolute, so is liberty of speech, which is 'inseparable' from the liberty of thought. Liberty of speech, moreover, is essential not only for its own sake but for the sake of truth, which requires absolute liberty for the utterance of unpopular and even demonstrably false opinions.
Gertrude HimmelfarbThe Marxist combination of materialism and determinism is fatally anti-humanistic. It denies a consciousness, a mind, that is independent of material conditions and class relations. It denies a will and volition that are capable of shaping the course of history. It denies an individuality that is not reducible to class. It denies both the idea and the reality of freedom, a freedom that is something more than the "bourgeois" freedom to buy and sell. It denies a morality that transcends class interests. And it denies the spirituality of man.
Gertrude Himmelfarb