Depends on the type of moment... I like Lord Acton's exhortation to "judge talent at its best and character at its worst".[1]
[1]: http://en.wikiquote.org/wiki/John_Dalberg-Acton,_1st_Baron_A...
[1]: http://en.wikiquote.org/wiki/John_Dalberg-Acton,_1st_Baron_A...