The bow must be strung and unstrung . . . there must be time also for the unconscious thinking which comes to the busy man in his play. - Louis Brandeis

The defendants' objections to the evidence obtained by wire-tapping must, in my opinion, be sustained. It is, of course, immaterial where the physical connection with the telephone wires leading into the defendants' premises was made. And it is also immaterial that the intrusion was in aid of law enforcement. Experience should teach us to be most on our guard to protect liberty when the government's purposes are beneficent. Men born to freedom are naturally alert to repel invasion of their liberty by evil-minded rulers. The greatest dangers to liberty lurk in insidious encroachment by men of zeal, well-meaning but without understanding.

Behind every argument is someone's ignorance.

Full and free exercise of this right by the citizen is ordinarily also his duty; for its exercise is more important to the nation than it is to himself. Like the course of the heavenly bodies, harmony in national life is a resultant of the struggle between contending forces. In frank expression of conflicting opinion lies the greatest promise of wisdom in governmental action; and in suppression lies ordinarily the greatest peril.