Mystics understand that a certain moral evolution is necessary before a person can attain a certain power. So they do not teach it indiscriminately - not out of desire for monopoly, or to hold something back in their possession. What will a child do if you give him a loaded rifle to play with? He does not understand what killing means. Yes, if we stop to examine our aims, aspirations, pursuits in life to which we attach so much importance, perhaps we shall discover that we are not very far removed from the children.