Few things have done more harm than the belief on the part of individuals or groups (or tribes or states or nations or churches) that he or she or they are in sole possession of the truth: especially about how to live, what to be and do - and that those who differ from them are not merely mistaken, but wicked or mad: and need restraining or suppressing.
Isaiah BerlinScience cannot destroy the consciousness of freedom, without which there is no morality and no art, but it can refute it.
Isaiah BerlinAll forms of tampering with human beings, getting at them, shaping them against their will to your own pattern, all thought control and conditioning is, therefore, a denial of that in men which makes them men and their values ultimate.
Isaiah BerlinOne belief, more than any other, is responsible for the slaughter of individuals on the alter of the great historical ideas - justice or progress or happiness of future generations... or emancipation of a nation or race or class... this is the belief that somewhere... there is a final solution.
Isaiah Berlin