The most important aspect of this atmosphere is undoubtedly freedom of the mind. The citizen seeks for happiness, and the state, for him, is an institution which exists to make his happiness possible. He judges it, I have urged, by its capacity to respond to the needs he infers from the experience he encounters. That experience, I have insisted, is private to himself. Its predominant quality is its uniqueness. Either it is his own, or it is nothing. The substitution for it of someone else’s experience, however much wider or wiser than his, is, where it is based upon constraint, a denial of freedom. What the citizen, quite rightly, expects from the state is to have his experience counted in the making of policy, and to have it counted as he, and he only, expresses its import. Obviously enough, if his experience is to count, a man must be able to state it freely. The right to speak it, to print it, to seek in concert with others its translation into the event, is fundamental to liberty. If he is driven, in this realm, to silence and inactivity, he becomes a dumb and inarticulate creature, whose personality is neglected in the making of policy. Without freedom of the mind and of association a man has no means of self-protection in our social order. He may speak wrongly or foolishly; he may associate with others for purposes that are abhorrent to the majority of men. Yet a denial of his right to do these things is a denial of his happiness. Thereby, he becomes an instrument of other peoples ends, not himself an end. That is the essential condition of the perversion of power. Once we inhibit freedom of speech, we inhibit criticism of social institutions. The only opinions of which account is then taken are the opinions which coincide with the will of those in authority. Silence is taken for consent; and the decisions that are registered as law reflect, not the total needs of the society, but the powerful needs which have been able to make themselves felt at the source of power. Historically, the road to tyranny has always lain through a denial of freedom in this realm. I desire here to maintain a twofold thesis. I shall seek to show, first, that liberty of thought and association--the two things are inextricably intertwined--is good in itself, and second, that its denial is always a means to the preservation of some special and, usually, sinister interest which cannot maintain itself in an atmosphere of freedom. I shall then discuss what restrictions, if any, must be placed upon this right, and the conditions it demands for its maximum realization. I shall, in particular, maintain that all restrictions upon freedom of expression upon the ground that they are seditious or blasphemous are contrary to the well-being of society.