perhaps what you need to have is perspective in life
u shd be proud of what your father had achieved and at the same
time, pity him that he had only this much time to achieve this
much, and soon, he would be gone.
He just wish to show all that he knows to you and you think he is
showing off - but u know what, thanks to what he has done, little
as you may judge it, what he had given you is the chance to learn
more and that is how you can see he knows less.
So be thankful for the opportunity he has given you and work hard
for yourself. working hard is not simply for money though money is
good. But it doesn't solve all problems 
