I am trying to find information on the criticism that Immanuel Kant had for previous ethical theories. Any suggestions...I've found a few places online but I don't understand the language.

Answer 1

Kant isn't easy to understand, but I suggest you work at trying to understand these sources.

http://en.wikipedia.org/wiki/Immanuel_Kant

http://www.bartleby.com/65/ka/Kant-Imm.html