In Alberty v. United States, 162 U.S. 499 (1896), the Supreme Court said: ". . . it is not universally true that a man, who is conscious that he has done a wrong, `will pursue a certain course not in harmony with the conduct of a man who is conscious of having done an act which is innocent, right and proper;' since it is a matter of common knowledge that men who are entirely innocent do sometimes fly from the scene of a crime through fear of being apprehended as the guilty parties, or from an unwillingness to appear as witnesses. Nor is it true as an accepted axiom of criminal law that `the wicked flee when no man pursueth, but the righteous are as bold as a lion.' "