Abe Lincoln (my hero by the way) once said:
"The money power preys upon the nation in times of peace and conspires against it in times of adversity. It is more despotic than monarchy, more insolent than autocracy, more selfish than bureaucracy. I see in the near future a crisis approaching that unnerves me and causes me to tremble for the safety of my country. Corporations have been enthroned, an era of corruption in high places will follow, and the money power of the country will endeavor to prolong its REIGN by working upon the prejudices of the people until the wealth is aggregated in a few hands and the Republic is destroyed."
I mostly agree. Capitalism breeds greed, no doubt about it. The only way to fight the aggreagation of wealth is through progressive taxation.