Встречают по одежке
I think that the proverb «Meet by clothes, see off by mind » is very exact and wise.
Really, when we get acquainted with a new person at first we pay attention what this or that person has on, how does he speak and conduct himself. And if something doesn`t come right we stop these relations.
But nevertheless only time helps us to know the person better. Associating with the person more closely, we know what kind of person he or she is: kind or greedy, clever or dull.
Then when we know the man better, we begin to respect or hate him. And the appearance doesn`t play any role!
So, meet by clothes, see off by mind!