There were no sponge-cake saints

It is inevitable that you should feel the rub of other people's characters against your own. After all, you are not a gold coin that everyone likes.

Besides, without that friction produced by contact with others, how would you ever lose those corners, those edges and projections — the imperfections and defects — of your character, and acquire the smooth and regular finish, the firm flexibility of charity, of perfection?

If your character and the characters of those who live with you were soft and sweet like sponge-cake you would never become a saint.

-St. Josemaría Escrivá, from The Way, #20