Life is a hideous thing, and from the background behind what we know of it peer daemoniacal hints of truth which make it sometimes a thousandfold more hideous. 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 loosed upon the world. If we knew what we are, we should do as Sir Arthur Jermyn did; and Arthur Jermyn soaked himself in oil and set fire to his clothing one night.