From outside one will always triumphantly impress theories upon the world and then fall straight into the ditch one has dug, but only from inside will one keep oneself and the world quiet and true.
Science, already oppressive with its shocking revelations, will perhaps be the ultimate exterminator of our human species - if separate species we be - for its reserve of unguessed horrors could never be borne by mortal brains if loossed upon the world.