If one wants to be a successful specialist, he must be aware of his field,...
 

World is world not heaven or hell. I also made mistakes for trading in a large amount--dreamed for heaven but fell in hell, did not be wiped out  just because I preserved most part .  
 

Soon the result of my writing will be clear, I will invest mainly in my  speciality,  for the world is so large that I will be lost in that vague heaven.