In a hierarchy every employee tends to rise to his level of incompetence ... in time every post tends to be occupied by an employee who is incompetent to carry out its duties ... Work is accomplished by those employees who have not yet reached their level of incompetence.
An economist is an expert who will know tomorrow why the things he predicted yesterday didn't happen today.
Some problems are so complex that you have to be highly intelligent and well informed just to be undecided about them.
Fools rush in where wise men fear to trade.