delivered the opinion of the Court.
We granted certiorari to review the decision of the Colorado Court of Appeals,
The petitioner pleaded guilty to violating section 35-43-128, C.R.S. 1973, by killing a neighbor’s calf, and applied for probation. He was thirty-nine years old, had no prior criminal convictions, had been married sixteen years, and provided the sole support for his wife and their five children. The petitioner had an alcohol problem and had been drinking both *55 beer and whiskey on the day of the offense. His job as a mill hand would have been continued if he were granted probation. The District Attorney did not oppose probation.
In denying probation, the trial judge indicated that because the petitioner’s family had been in cattle ranching for several generations, he should have appreciated the significance of killing the calf. A penitentiary sentence of three to five years was imposed.
Petitioner filed a timely motion pursuant to Crim.P. 35(a) seeking probation or reduction of his sentence. At the hearing on that motion, his wife testified regarding the family’s hardship, a letter from his penitentiary treatment supervisor strongly recommended release, and another letter offered him a job. The trial judge, in a rambling discourse on many subjects irrelevant to the pending motion, refused to grant probation or reduce the sentence.
Petitioner appealed. In a two-to-one decision, the Court of Appeals characterized the sentence as “excessive under the circumstances,” but held that the trial court’s “decision is not reviewable because determination of the sentence to be received by an individual defendant is a matter left to the discretion of the trial court, within the bounds provided by the legislature.” The dissenting opinion took the position that, instead of exercising judicial discretion, the trial judge had decided the motion on the basis of irrelevant facts.
Rule 35(a) provides the trial court an opportunity to reconsider, in the interest of justice, a sentence previously imposed. It is the trial court’s duty to consider all relevant and material factors, including new evidence as well as facts known at the time the original sentence was pronounced.
People v. Smith,
The judicial branch, like the executive and legislative, is subject to the doctrine that ours is a government of laws, not of men. 1 Judicial discretion is not personal discretion. All judicial power is held in trust for the people, having been delegated by them through the constitution. Trial judges may exercise judicial discretion only according to law, and a trial judge’s exercise of discretion is subject to this court’s supervisory authority granted by Colorado Constitution Article VI, section 2(1). Judicial discretion cannot be distorted to camouflage or insulate from appellate review a decision based on the judge’s personal caprice, hostility or prejudice.
*56
Other courts have held that a trial judge’s discretionary rulings on sentencing and probation are subject to review for abuse of discretion.
See e.g., United States
v.
MacClain,
This petitioner was entitled to have the trial court consider all the relevant information presented in support of his Rule 35(a) motion and exercise judicial discretion to reach a reasoned judgment based on the evidence. The record supports the conclusion that the trial judge did not do so, but rather failed to exercise
any
judicial discretion. Moreover, the record indicates that the trial court acted capriciously, basing his decision on personal considerations rather than on the evidence. The fact that a trial court has discretion in deciding a matter does not justify exercising that discretion arbitrarily or capriciously.
People
v. Wade,
As Chief Justice Hughes stated in
Burns
v.
United States,
The trial court’s judgment denying the Rule 35(a) motion is hereby vacated, and that motion is remanded for a prompt hearing before a different trial judge.
Notes
See Joint Anti-Fascist Refugee Committee v.
McGrath,
