"In his essay on Repressive Tolerance...Marcuse argues that the tolerance of the advanced industrial democracies is a deceit... Freedom of speech is not an overriding good, for to allow freedom of speech in the present society is to assist in the propagation of error, and "the telos of tolerance is truth." The truth is carried by the revolutionary minorities and their intellectual spokesmen, such as Marcuse, and the majority have to be liberated by being re-educated into the truth by this minority, who are entitled to suppress rival and harmful opinions. This is perhaps the most dangerous of all Marcuse's doctrines, for not only is what he asserts false, but his is a doctrine which if it were widely held would be an effective barrier to any rational progress and liberation... What, then, are the true connections between tolerance, rationality, and liberation? The telos of tolerance is not truth but rationality. Certainly we value rationality because it is by rational methods that we discover truth; but a man may be rational who holds many false beliefs, and a man may have true beliefs and yet be irrational. What is crucial is that the former has the possibility of progressing toward truth, while the second not only has no grounds for asserting what he believes, even though it is true, but is continually liable to acquire false beliefs. What is it to be rational? It is a necessary condition of rationality that a man shall formulate his beliefs in such a way that it is clear what evidence would be evidence against them and that he shall lay himself open to criticism and refutation in the light of any possible extreme. But to foreclose on tolerance is precisely to cut oneself off from such criticism and refutation. It is to gravely endanger one’s own rationality by not admitting one's own fallibility."