The history of ancient and modern republics had taught them...

The history of ancient and modern republics had taught them that many of the evils which those republics suffered arose from the want of a certain balance, and that mutual control indispensable to a wise administration. They were convinced that popular assemblies are frequently misguided by ignorance, by sudden impulses, and the intrigues of ambitious men; and that some firm barrier against these operations was necessary. They, therefore, instituted your Senate.