Full Idea
Hegel attacks doctrines which are attempts by the individual to supply his own morality, and at one and the same time, to claim for it a genuine universality.
Gist of Idea
You can't have a morality which is supplied by the individual, but is also genuinely universal
Source
report of Georg W.F.Hegel (Elements of the Philosophy of Right [1821]) by Alasdair MacIntyre - A Short History of Ethics Ch.15
Book Reference
MacIntyre,Alasdair: 'A Short History of Ethics' [Routledge 1967], p.208
A Reaction
Hegel clearly has Kant in mind. It is a penetrating criticism. Of course, there is no reason why a universal mathematical proof shouldn't be 'provided' by the individual. The Kantian seeks agreement. See Contractualism.
Related Idea
Idea 4251 If we are required to give moral thought the highest priority, this gives morality no content [Williams,B on Kant]