Full Idea
Aristotle does not fully endorse the famous first sentence of the 'Ethics'; he does not think every action aims at some good - for one thing akratic action does not.
Clarification
'Akratic' actions are those which lack self-control
Gist of Idea
Not all actions aim at some good; akratic actions, for example, do not
Source
comment on Aristotle (Nicomachean Ethics [c.334 BCE], 1094a03) by Myles F. Burnyeat - Aristotle on Learning to be Good p.91 n25
Book Reference
'Essays on Aristotle's Ethics', ed/tr. Rorty,Amélie Oksenberg [University of California 1980], p.91
A Reaction
Nice point. Aristotle's claim never sounded right, and yet vice presumably aims at what it perceives as good. Socrates presumably endorses the opening sentence, though Aristotle wouldn't.