delivered the opinion of the Court.

This case is here on review of a modified affirmance by the Court of Appeals of an order by the District Court summarily committing the petitioner for criminal contempt.

[*12] The proceeding grew out of the trial of one Peckham for abortion under D. C. Code, 1951, § 22-201, 31 Stat. 1322. The petitioner was Peckham’s trial counsel. Almost from the outset, a clash between the presiding judge and petitioner became manifest, which, it is fair to say, colored the course of the trial throughout its 14 days, and with increasing personal overtones. The judge again and again admonished petitioner for what he deemed disregard of rulings and other behavior outside the allowable limits of aggressive advocacy, and warned him of the consequences by way of punishment for contempt which such conduct invited. On the other hand, these interchanges between court and counsel were marked by expressions and revealed an attitude which hardly reflected the restraints of conventional judicial demeanor. Such characterization of necessity derives from an abiding impression left from a reading of the entire record.

At the close of the trial, after the jury had retired for deliberation, the judge, acting under the procedure prescribed by Rule 42 (a) of the Federal Rules of Criminal Procedure^[1] and invoking the authority of Sacher v. United States, 343 U. S. 1, found the petitioner guilty of criminal contempt on the basis of a certificate filed under the Rule, containing 12 findings of “contumacious, and unethical conduct in open court during the trial,” and ordered him committed for 10 days to the custody of the United States Marshal for the District of Columbia.

The Court of Appeals found that four of the 12 findings amply supported the commitment, but reduced the punishment from 10 days to 48 hours. It concluded that “the[*13] record does not support the penalty imposed. Appellant’s conduct cannot fairly be considered apart from that of the trial judge. Each responded to great provocation from the other. The judge’s treatment of appellant, examples of which are included in an appendix to our opinion in Peckham v. United States, U. S. App. D. C., - F. 2d -, and which is the chief factor in leading a majority of this court to conclude that Peckham’s conviction cannot stand, leads us all to conclude that appellant’s sentence should be reduced from 10 days to 48 hours.” 93 U. S. App. D. C. 148, 150, 208 F. 2d 842, 843-844. As indicated above, the Court of Appeals reversed Peckham’s conviction because it found that the judge’s behavior barred the court “from sustaining the judgment as the product of a fair and impartial trial.” Peckham v. United States, 93 U. S. App. D. C. 136, 145, 210 F. 2d 693, 702.

In view of this Court’s “supervisory authority over the administration of criminal justice in the federal courts,” McNabb v. United States, 318 U. S. 332, 341, and the importance of assuring alert self-restraint in the exercise by district judges of the summary power for punishing contempt, we brought the case here. 347 U. S. 932.

We shall not retrace the ground so recently covered in the Sacher case, supra. In enforcing Rule 42 (a), the Court in that case emphasized its duty to safeguard two indispensable conditions to the fair administration of criminal justice: (1) counsel must be protected in the right of an accused to “fearless, vigorous and effective” advocacy, no matter how unpopular the cause in which it is employed; (2) equally so will this Court “protect the processes of orderly trial, which is the supreme object of the lawyer’s calling.” 343 U. S., at 13-14. Rule 42 (a) was not an innovation. It did not confer power upon district judges not possessed prior to March 21, 1946. 327 U. S. 821. “This rule,” the Advisory Committee on the rules of criminal procedure stated, “is substantially a[*14] restatement of existing law, Ex parte Terry, 128 U. S. 289; Cooke v. United States, 267 U. S. 517, 534.” The pith of this rather extraordinary power to punish without the formalities required by the Bill of Rights for the prosecution of federal crimes generally, is that the necessities of the administration of justice require such summary dealing with obstructions to it. It is a mode of vindicating the majesty of law, in its active manifestation, against obstruction and outrage. The power thus entrusted to a judge is wholly unrelated to his personal sensibilities, be they tender or rugged. But judges also are human, and may, in a human way, quite unwittingly identify offense to self with obstruction to law. Accordingly, this Court has deemed it important that district judges guard against this easy confusion by not sitting themselves in judgment upon misconduct of counsel where the contempt charged is entangled with the judge’s personal feeling against the lawyer.

Of course personal attacks or innuendoes by a lawyer against a judge, with a view to provoking him, only aggravate what may be an obstruction to the- trial. The vital point is that in sitting in judgment on such a misbehaving lawyer the judge should not himself give vent to personal spleen or respond to a personal grievance. These are subtle matters, for they concern the ingredients of what constitutes justice. Therefore, justice must satisfy the appearance of justice.

Duly mindful of the fact that the exercise of the power of summary punishment for contempt “is a delicate one and care is needed to avoid arbitrary or oppressive conclusions,” this Court in Cooke v. United States, supra, without in the slightest condoning contemptuous behavior on the part of a lawyer, deemed it desirable that “where conditions do not make it impracticable, or where the delay may not injure public or private right, a judge called upon to act in a case of contempt by personal attack upon him, may, without flinching from his duty, properly[*15] ask that one of his fellow judges take his place.” 267 U. S., at 539.

The Government has vigorously pressed upon us the leeway that must be allowed to a trial judge in assessing the necessities of such a situation. We do not mean to imprison the discretion of judges within rigid mechanical rules. The nature of the problem precludes it. Nor are we unmindful of the fact that the ultimate finding of reprehensible misconduct by petitioner was sustained by the Court of Appeals. That great weight is to be given to the findings of fact by the two lower courts is a rule of wisdom in the exercise of the reviewing power of this Court. But in the enforcement of the rule it is important to discriminate between more or less subordinate facts leading to a judgment of their legal significance, and a conclusion — though concurred in by two courts — that may in fact imply a standard of law on which judgment on the case in its entirety is based. Baumgartner v. United States, 322 U. S. 665, 670-671; United States v. Appalachian Elec. Power Co., 311 U. S. 377, 403-404. We are not intimating that the Court of Appeals was not justified in finding ample support for its conclusion that the trial judge was warranted in deeming petitioner’s conduct as such contemptuous. The real issue is whether under the decision of the Cooke case such a ruling should have been made by the trial judge, or whether for the very purpose of vindicating justice for which the power of summary contempt is available, the determination of petitioner’s guilt and the punishment properly to be meted out on a finding of guilt should have been made in the first instance by a judge not involved, as was this .trial judge, in the petitioner’s misconduct.

The fact that the Court of Appeals reduced the sentence from 10 days to 48 hours because the petitioner’s conduct “cannot fairly be considered apart from that of the trial judge,” is compelling proof that the latter failed[*16] to represent the impersonal authority of law. Plainly, the Court of Appeals thought that in the trial court’s disposition of the misconduct of the petitioner there was an infusion of personal animosity. And indeed that court found that such was the fact on a full consideration of the record in the Peckham case and for that reason reversed Peckham’s conviction. That court spoke of “the excessive injection of the trial judge into the examination of witnesses, his numerous comments to defense counsel, indicating at times hostility, though under provocation,” which it concluded “demonstrated a bias and lack of impartiality.” Peckham v. United States, supra, 93 U. S. App. D. C., at 145, 210 F. 2d, at 702.

It bears repeating that the whole record amply supports this characterization of the trial judge by the Court of Appeals.^[2] And his feeling toward the lawyer on whom[*17] he had to pass sentence is revealed by his statement to the jury in discharging them.^[3]

The question with which we are concerned is not the reprehensibility of petitioner’s conduct and the consequences which he should suffer. Our concern is with the fair administration of justice. The record discloses not a rare flare-up, not a show of evanescent irritation — a modicum of quick temper that must be allowed even judges. The record is persuasive that instead of representing the impersonal authority of law, the trial judge permitted himself to become personally embroiled with the petitioner. There was an intermittently continuous wrangle on an unedifying level between the two. For one reason or another the judge failed to impose his moral authority upon the proceedings. His behavior precluded that atmosphere of austerity which should especially dominate a criminal trial and which is indispensable for an appropriate sense of responsibility on the part of court, counsel and jury. Such an atmosphere will also make for dispatch insofar as is consonant with a fair trial. The manner in which this trial was conducted doubtless contributed to the wastefulness of 14 trial days for a case of such limited scope as was the Peckham prosecution.

We conclude that application of the rule pronounced in Cooke v. United States, is called for. The fact that the Court of Appeals here reduced the sentence inl-[*18] posed by the trial judge does not take this situation out of the moral and judicial considerations expounded on behalf of the Court by Mr. Chief Justice Taft. To sanction such a course of procedure would give it encouragement. In the language of the Cooke case, with one appropriate change, “We think, therefore, that when this case again reaches the District Court to which it must be remanded, the judge who imposed the sentence herein should invite the Chief Judge of the District Court to assign another judge to sit in the second hearing of the charge against the petitioner.” See 267 U. S., at 539.

Reversed.