Full Idea
The sole trouble which virtue demands is that of just calculation, and a steady preference for the greater happiness.
Gist of Idea
Virtue just requires careful calculation and a preference for the greater happiness
Source
David Hume (Enquiry concerning Principles of Morals [1751], IX.II.228)
Book Reference
Hume,David: 'Enquiries Conc. Human Understanding, Morals', ed/tr. Selby-Bigge/Nidditch [OUP 1975], p.279
A Reaction
Hume was the parent of utilitarianism. Can one person exhibit virtue on a desert island?