Full Idea
Hobbes (like Grotius) shifted from talking about 'the good', which had been the traditional subject for both ancient and Renaissance moralists, to talking instead about 'rights'.
Gist of Idea
Hobbes shifted from talk of 'the good' to talk of 'rights'
Source
report of Thomas Hobbes (The Elements of Law [1640]) by Richard Tuck - Hobbes Ch.2
Book Reference
Tuck,Richard: 'Hobbes: a very short introduction' [OUP 2002], p.68
A Reaction
This is part of the crucial shift away from the Greek interest in excellence of character, towards the Enlightenment legalistic interest in right actions, as well as social rights. Bad move, well analysed by MacIntyre.