Looks that matter!

____________________ is an expression that has been around for several hundred years, and it has the same meaning as ‘Y is as Y _____’ although the latter would much suit the fairer kind. What the expression literally means is that it is not the looks of the individual that are important, but the good deeds that he performs: in other words, good behaviour and chivalrous deeds are much more important than good looks. Virtuous enough, eh? :D

*John Smith may not be much to look at, but he is always helping those who are in need. X is as X ________.

According to some scholars, the expression was first recorded by the English poet, Geoffrey Chaucer. In the movie ‘Forrest Gump’, the main character (Forrest) comes up with his own version of the proverb: ‘Z is as Z ____.’

What's the good proverb and its Y form?

PS: Z will crown you "Z" and fetch extra points