Last night I watched the first part of „Men in Black“ again. And I noticed it features an immensely wise line which I won’t withhold from you, of course. Agent K (Tommy Lee Jones) is explaining to prospective Agent J (Will Smith) why the existence of extraterrestrial intelligent life on earth must be kept hidden from the public:
„One human is intelligent, but a bunch of humans are dumb hysterical dangerous animals.“
Note that I retranslated the line from the German version, so I don’t know the original words. Strangely enough, this line has not made it to the memorable ones on imdb.com.