"Weak people can never forgive. Forgiveness is the attribute of the strong." (Gandhi)

A friend of mine posted this quote as his facebook status today. I like it. It's appropriate for this current season of my life. That said, I wonder if it wouldn't be more apt to say 'forgiveness makes you stronger' or 'A lack of forgiveness makes you weak." Denying forgiveness destroys. Forgiveness repairs, builds up and renews.

Which one comes first, the chicken or the egg?