The nicomachean ethics - Aristotle

1. What definition of the good then will hold true in all of the arts? Perhaps we may define it as that for the sake of which everything else is done
2. hence if there is the end of all the things done by human action, this will be the practicable good
3. now happiness above all else appears to be absolutely final in this sense, since we always choose it for its own sake and never as a means to something else; whereas honour, pleasure, intelligence, and excellence in its various forms, we choose indeed for their own sakes
4. self-sufficiency of happiness
5. we think happiness the most desirable of all good things
6. gives rise to the questionwhether happiness is a thing that can be learnt, or acquired by training, or cultivated in some other manner, or wether it is bestowed by some divine dispersion or even by fortune.
7. It is the active excercise of our faculties conformity with virtues that causes happiness
8. no surpremely happy man can ever become miserable
9. importance of having been definitely trained from childhood to like and dislike the proper things; this is what good education means.
10. to feel pleasure and pain rightly or wrongly has a great effect on conducts. It is harder to fight against pleasur than against anger, but virtue is constantly dealing with what is harder, since the harder the task the better is success.
11. we must be in everything be most of all on our guard against what is pleasant and against pleasure