Never fire a laser at a mirror. Autore: Larry Niven Copy Quote More from Larry Niven “There had been a popular joke on Freedom, started by a man named Calder. Lookin…” “Some amiably deranged science-fiction writer had come up with it forty years ba…” “Hopeless causes are the only ones worth fighting for. The fight for the taxpaye…” “They used to teach us that evolution of intelligent beings wasn't possible," sh…”