Full Idea
The Eightfold Path has three steps concerning morality - right speech, right bodily action, and right livelihood; three of wisdom - right views, right intentions, and right effort; and two of tranquillity - right mindfulness and right concentration.
Gist of Idea
The Eightfold Path concerns morality, wisdom, and tranquillity
Source
Ashvaghosha (Saundaranandakavya [c.50], XVI)
Book Reference
'Buddhist Scriptures', ed/tr. Conze,Edward [Penguin 1959], p.114
A Reaction
Most of this translates quite comfortably into the aspirations of western philosophy. For example, 'right effort' sounds like Kant's claim that only a good will is truly good (Idea 3710). The Buddhist division is interesting for action theory.
Related Idea
Idea 3710 The only purely good thing is a good will [Kant]