Full Idea
That we should act according to the right principle is common ground and may be assumed as a basis for discussion.
Gist of Idea
We must take for granted that we should act according to right principle
Source
Aristotle (Nicomachean Ethics [c.334 BCE], 1103b31)
Book Reference
Aristotle: 'Ethics (Nicomachean)', ed/tr. ThomsonJ A K/TredennickH [Penguin 1976], p.93
A Reaction
Hume grumbles that we can't prove values from facts, but Aristotle that is an absurd aspiration. His 'Ethics' is simply a handbook for people who wish to be good human beings.
Related Idea
Idea 21415 Duty is impossible without prior moral feeling, conscience, love and self-respect [Kant]