A new exhibit devoted to the life and work of the late, great Lenny Bruce opened at Brandeis University Thursday morning. with the comedian’s daughter Kitty Bruce there to cut the ribbon. The show, part of the two-day academic conference “Comedy and the Constitution: The Legacy of Lenny Bruce,” is open to the public between now and the end of the academic year. Among those speaking at the conference are Christie Hefner, a Brandeis alum and trustee of the Hugh M. Hefner Foundation, which helped acquire Bruce’s archives from his daughter; attorney Martin Garbus, who represented Bruce in a First Amendment case; and comedian Lewis Black, a descendant of sorts of Bruce.