(After stating the foregoing facts.) Since no contention is made to the contrary, we will deal with the instant case upon the assumption that the effect of the decree rendered in the divorce and alimony case between these parties was to award custody and control of the child presently involved to his mother. In cases of this character there is always one person not at fault, namely, the unfortunate child. Therefore our first consideration of the case will relate to the disposition which the trial judge made of him. The mother earnestly insists that a court of competent jurisdiction has previously decreed
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that she should have custody and control of the child, and that the trial judge has, under the facts of the case, abused his discretion in making a different award. More than four years have passed since the original judgment was rendered, and the father contends that the circumstances surrounding his son have materially changed. In other words, he claims that the mother by her personal misconduct has broken faith with the court as parens patriae of the child and forfeited her right of custody and control. It is well settled by numerous decisions of this court that a judgment like the one heretofore rendered respecting this child is conclusive between the parties, and the principle of res judicata is applicable, unless a material change of circumstances substantially affecting the welfare and best interest of the child is made to appear.
Handley
v.
Handley,
204
Ga. 57
(
We deal next with the contempt feature of the case. It is alleged in the petition that the defendant wilfully and delib
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erately violated the decree of January 15, 1945, by interfering with the plaintiff’s lawful possession and control of their child, and by failing and refusing to pay the alimony instalments of $40 each, which had been past due since January 1 and February 1, 1949. It is, of course, unnecessary to cite authority for the proposition that a wilful failure or refusal to comply with the orders, judgments, or decrees of a court constitutes contempt, for which the offender may be punished. Respecting the plaintiff’s contention that the defendant had wilfully interfered with her custody of the child in question, the evidence was in sharp conflict. She testified positively that the defendant had taken the child away without her consent, and he testified just as positively that it was done with her full knowledge and consent. The trial judge was the trior of that issue. He passed upon their respective credibility as witnesses; it was his province to do so. He saw them, heard them testify, observed their conduct and demeanor during the trial, and very likely knew them. As to this, he saw fit to believe the defendant’s testimony, rather than that of the plaintiff, and we have no right or desire to control his findings.
Smith
v.
Tindol,
179
Ga.
801 (
In the circumstances of this case, there is no merit in the contention that the judgment complained of should be reversed because the plaintiff’s counsel were denied the right to present arguments to the court. We, of course, recognize the right of argument to be a valuable and substantial one which all litigants have in the trial of cases. Mr. Justice Bleckley, who delivered the opinion for this court in
VanDyke
v.
Martin,
55
Ga.
467, has so clearly expressed our view of the tremendous value of this right that we cite the case here, not only as authority for what we have just said, but with a hope that all of the judges of this State will read it again and follow it as a sound rule of procedure and practice in the trial of all cases. But the right of argument, like other rights, even the right of trial itself
(Sarah
v.
State,
28
Ga.
576), may be waived; and in the present case the facts concerning the occurrence about which complaint is made, as shown by the judge’s certificate which is
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not to be questioned in a court of review
(Spear
v.
State, 17 Ga. App.
540 (1),
For no reason assigned in the present case is the judgment complained of erroneous.
Judgment affirmed.
