Aрpellant has raised numerous challenges to his convictions on charges of escape, conspiracy to escape, and robbery. Finding no merit in any of appellant’s contentions, we affirm the judgment of sentence.
On May 29, 1978, seven inmates, including appellant, used hooks and ropes to climb through a skylight and over a wall and escape from Holmesburg Prison in Northeast Philadelphia. Lаter that evening appellant and his fellow escapees robbed three men of approximately $1,000 at a tire store several blocks from the prison. The seven then fled the scene in a van which belonged to one of the robbery victims. On the morning of May 31, 1978, police discovered appellant hiding in a house in South Philadelphia, thirteen to fourteen miles from the prison, and arrested him along with four of the other escapees also found in the house. Appellant was subsequently tried jointly with five of his fellow escapees and convicted by a jury of the charges set forth above. 1 Following denial of post-verdict motions and imposition of sentence, appellant took this appeal.
Appellant contends first that the evidence is insufficient to support his convictiоn of robbery because of deficiencies in the testimony of the only witness to identify him at trial. Specifically, appellant claims that the witness, David Scott, failed to identify him positively at trial and failed to identify him at all during a photo display conducted
*5
within hours after the robbery.
2
The record reveals that on direct examination Scott did identify appellant as one of the robbers. Subsequently, after extensive cross-examination, Scott stated that appellant “looked like” one of the men who had robbed him, but conceded that his identification was somewhat “fuzzy” and that his recollection of the incident was fresher nearer to the time of its occurrence. In
Commonwealth v. Hickman,
Appellant contends next that several statements which the prosecutor made during his closing argument were so prejudicial as to necessitate the grant оf a new trial. In the first of these statements the prosecutor referred to an identification of appellant which Scott had made at the preliminary hearing and which was not in evidence at trial. Appellant’s objection to this statement was sustained, and the lower court carefully instructed the jury that the prosecutor’s reference to the preliminary hearing testimony was not in evidencе and was to be disregarded. Subsequently, the court denied appellant’s request for a mistrial based on the statement. Appellant argues that the reference to Scott’s preliminary hearing identification of him was particularly prejudicial because it was likely to enhance the credibility of what he characterizes as Scott’s weak identification of him at trial.
Our Supreme Court has stated that “comments by the district attorney do not constitute reversible error unless the unavoidable effect of such comments would be to prejudice the jury, forming in their minds fixed bias and hostility toward the defendant so that they could not weigh the evidence objectively and render a true verdict.”
Commonwealth v. McNeal,
In the second statement to which appellant directs our attention, the prosecutor suggested to the jury that if they acquitted the defendants, they would be sending a message to the rеmaining inmates of Holmesburg Prison that they could escape the prison with impunity. 4 This statement also provoked a motion for a mistrial, which the lower court denied. Appellant now contends that the state *8 ment was intended to kindle in the jury the fear of mass escape, and hence warrants reversal.
“Although appeals to prejudice and passion are not to be approved, we have held that a District Attorney in his arguments, v/ithin proper limits, may argue for law and order and remind the jury of the danger to the community posed by persons prone to resort to violence.”
Commonwealth v. Feiling,
In the final statement which appellant challenges, the prosecutor informed the jury that he would not express his opinion as to credibility or guilt because it was unethical for an attorney to do so. Then, referring to counsel for defendants, the prosecutor said, “I don’t know what law school they went to, but they should have said the same thing.” The lower court overruled appellant’s objection and subsequently denied a motion for a mistrial based on this statement. Appellant now contends that the prosecutor’s statement unfairly implied that his counsel was unethical.
*9
In
Commonwealth v. Nesbitt, supra,
the prosecutor stated in his closing argument that defense counsel had violated the Canons of Ethics by asserting in his summation that his client was innocent. We held that although it had been improper for the prosecutor to characterize defense counsel as unethical, the impact of the prosecutor’s remark “was not so prejudicial as to require granting appellant a new trial.”
Appellant next challenges the lower court’s refusal to admit evidence of a defense to the charge of escape. At trial appellant attempted to present evidence of intolerable conditions at Holmesburg Prison, including inadequate medical care and facilities, to establish the defense of justification to the escape charge.
6
Appellant asserts that this evidence would have shown that he had been suffering from several medical problems and “that desperation caused by his pain and the lack of proper medical treatment and other conditions . .. caused him to leave the prison.” Brief for Appellant at 38. The lower court ruled that evidence of such general prison conditions was inadmissible and limited any such exculpatory evidence to proof of immediate threats to the lives or personal safety of appellant and his co-defendants had they remained in prison. Appellant contends that this ruling deprivеd him of “a fundamental element of due process of law,”
Washington v. Texas,
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“An accused has a fundamental right to present defensive evidence so long as such evidence is relevant and not excluded by an established evidentiary rule.”
Commonwealth v. Greene,
*11
Appellant contends next that the lower court erred in refusing his requested jury instructions on the effect of prior inconsistent statements on the credibility of witnesses. At trial all three robbery victims testified that they had been robbed by seven men wearing blue pants resembling those later found near the tire store and identified as prison pants. Cross-examination revealed, however, that in pretrial statements (including statements taken shortly after the incident) the three victims had given varying estimates of the number of perpetrators (ranging from six to nine), and had not always provided descriptions of their assailants’ clothing. Appellant argues that these inconsistencies had such a critical bearing on the witnesses’ credibility that the failure to give the requested instruction constitutes reversible error. We disagree. It is settled that “the trial court is not required to accept the language of the point submitted by counsel but rather is free to select its own form of expression. The only issue is whether the area is adequately, accurately and clearly presented to the jury for consideration.”
Commonwealth v. McComb,
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Appellant contends finally that he was denied duе process of law and equal protection of law by the lower court’s use of what he asserts is a less favorable jury instruction on the meaning of the term “reasonable doubt” than that which he requested. Appellant requested the court to instruct the jury that “[a] reasonable doubt is a doubt that would cause a reasonably careful and sensible person to
hesitate
before acting upon a matter of importance in his own affairs” (emphasis added). The court denied this request and instructed the jury that “[t]he law has defined a reasonable doubt as that doubt that will
restrain
a reasonable, careful and sensible person from acting upon a matter of the highest importance in his own affairs” (emphasis added). Our Supreme Court has expressly approved both of these definitions for use in jury instructions. See
Commonwealth v. Young,
Notes
. The seventh member of the group pleaded guilty to charges arising out of the incident.
. Appellant contends that the Commonwealth’s proof of robbery is further weakened by the fact that neither of the other two robbery victims identified him at or before the trial. Because the testimony of one witness may suffice to establish the identification of the accused, however,
Commonwealth v. Meehan,
. Appellant’s reliance on
Commonwealth v. Farrington,
. The Commonwealth denies that the prosecutor ever made such a statement. Indeed, as the Commonwealth points out and appellant concedes, the transcript of the closing argument does not reveal any such statement. The record does reveal, howevеr, that immediately following the prosecutor’s argument, counsel for several of the defendants, including appellant, joined in moving for a mistrial on the basis of such a statement. Moreover, counsel for appellant filed a timely motion to supplement the transcript in which he asserted, inter alia, that the statement had been omitted and requested correction of the transcript accordingly. Although the court never acted on this aspect of appellant’s motion, the prosecutor did state at argument on post-verdict motions that he had no objection to any of appellant’s requests for supplementation. Under these circumstances we conclude that the prosecutor did make the statement in question.
. In
Nesbitt
the prosecutor characterized the victims of a robbery as “some of the least children of our society,” and asked the jury, “[C]an’t we protect them? Can you do something for them?”
. All of appellant’s co-defendants joined in this effort, and some sought additionally by this evidence to establish the defense of duress. Appellant’s offer, however, was based solely on the defense of justification.
. Appellant correctly points out that the defense of justification is available to an accused if “a legislative purpose to exclude the justification claimed dоes not otherwise plainly appear.” 18 Pa.C. S.A. § 503(a)(3). Since the legislature has not plainly excluded intolerable prison conditions as a justification to a charge of escape, appellant argues, the lower court lacked the power to exclude his proffered evidence to establish the defense. This argument, however, ignores the fact that the legislature has limited thе defense to “[cjonduct which the actor believes to be necessary to avoid a harm or evil to himself ... [which] is greater than that sought to be prevented by the law defining the offense charged.” Id. at § 503(a)(1). As was true with the defendant in Clark, appellant’s conduct after the escape strongly suggests that his motivation was to avoid official detention indefinitely rather than simply to avoid a harm or evil to himself caused by conditions at Hоlmesburg Prison. *11 Accordingly, the lower court properly disallowed appellant’s proffered evidence of prison conditions.
. Appellant’s reliance on
Commonwealth v. Kramer, 474
Pa. 341,
. Appellant asserts that “[tjhis Court has recognized that the hesitate version requires less dоubt for acquittal,” citing
Commonwealth
v.
Barksdale,
