From the saintly and single-minded idealist to the fanatic is often but a step.

Ever since the beginning of modern science, the best minds have recognized that "the range of acknowledged ignorance will grow with the advance of science." Unfortunately, the popular effect of this scientific advance has been a belief, seemingly shared by many scientists, that the range of our ignorance is steadily diminishing and that we can therefore aim at more comprehensive and deliberate control of all human activities. It is for this reason that those intoxicated by the advance of knowledge so often become the enemies of freedom.

We must show that liberty is not merely one particular value but that it is the source and condition of most moral values. What a free society offers to the individual is much more than what he would be able to do if only he were free. We can therefore not fully appreciate the value of freedom until we know how a society of free men as a whole differs from one in which unfreedom prevails.

We shall not grow wiser before we learn that much that we have done was very foolish.

Any man who is only an economist is unlikely to be a good one.

It is of the essence of the demand for equality before the law that people should be treated alike in spite of the fact that they are different.

Freedom can be preserved only if it is treated as a supreme principle which must not be sacrificed for particular advantages.