Where an accused stabs a victim but lacks the intention to kill (animus necandi), and the death results from negligent conduct, the accused is guilty of culpable homicide and not murder, as the essential elements of murder including intention to kill are absent. In sentencing for culpable homicide, substantial and unreasonable delays in prosecution constitute significant mitigating factors that must be weighed heavily in favor of the accused, particularly where combined with other mitigating circumstances such as the accused being a first offender, the deceased being the aggressor, and time already served in custody.