Direction: Read the passage carefully and answer the questions given below.

The preservation and development of freedom of opinion are not only a matter of adhering to abstract legal right, but also, and very urgently, a matter of organizing and arranging sufficient debate. Once we have a firm hold on the central principle, there are many practical conclusions to be drawn. We then realize that the defense of freedom of opinion consists primarily in perfecting the opportunity for an adequate give-and-take of opinion; it consists also in regulating the freedom of those revolutionists who cannot or will not permit or maintain debate when it does not suit their purposes. We must insist that free oratory is only the beginning of free speech, it is not the end, but a means to an end. The end is to find the truth. The practical justification of civil liberty is not that self-expression is one of the rights of man. It is that the examination of opinion is one of the necessities of man. For experience tells us that it is only when freedom of opinion becomes the compulsion to debate that the seed which our fathers planted has produced its fruit. When that is understood, freedom will be cherished not because it is a vent for our opinions but because it is the surest method of correcting them. The unexamined life, said Socrates, is unfit to be lived by man. This is the virtue of liberty, and the ground on which we may best justify our belief in it, that it tolerates error in order to serve the truth. When men are brought face to face with their opponents, forced to listen and learn and mend their ideas, they cease to be children and savages and begin to live like civilized men. Then only is freedom a reality, when men may voice their opinions because they must examine their opinions. The only reason for dwelling on all this is that if we are to preserve democracy we must understand its principles. And the principle which distinguishes it from all other forms of Government is that in a democracy the opposition not only is tolerated as constitutional but must be maintained because it is in fact indispensable.