How
often from the depths of belief in matter has the desolate human sense cried out, Oh, I don't know! Or that other more piteous cry, If I had only known! What might have been, had I only known! So cried Hamlet, charged with the command to act, but travailing in inactivity, not knowing how or when to act; and so cry all who believe that there is ever a time when man cannot know the right thing to do, who are putting their faith in the five senses as witnesses of Truth.