Through my thoughts, to mend a wall is to fix a barrier of their life or to be more cautious of what people say and do. In other words I think this particular wall is between two friends, a wall of dispute or privacy, a invisible wall is slowly being built. It is the nature of man kind to defend for themselves and to keep things that want to be a secret stay a secret. It is also a tendency for people who want to try to fix the relationship or to find out what things are being kept from them like Frost says in the poem something there is that doesnt love a wall, that want it down.
Everyone wants to get along well again with their friends family or their special someone, they want to be accepted and trusted once again, and thats what I think that doesnt love a wall. The feeling you get when someone looses trust in you or when someone is angry at your actions. But being ignorant and stubborn as we all are, we do not forgive and forget right away. Stay where you are until our backs are turned! We wear out our fingers rough with handling them. To me people do not forgive one another so quickly because then want assurance that the other is honest about being sorry or regretful for what they have said or done.
Both must go through wear out their fingers a lot to achieve the point where they forgive or are forgiven. That is all part of the way we live our lives its like another kind of outdoor game. Although one may forgive another, there are people out there who do not deserve to be forgiven, for they only take advantage of the willingness of the other to forgive them and will reiterate the things they did in the past. Hoping to always go through life the easy way. My apple trees will never get across and eat the cones under his pines, I tell him..
Some people who have come to their senses or those who have thought about the things that were done to them and have learned from them will know what Frost means when he says Good fences make good neighbors , and most of the time the people who caused the problem will not. They will not understand because they are selfish and do not understand what they have done and why it is wrong. They will never understand until they truthfully admit that they are wrong, because there is a point when one person can no longer take the abuse and will build a fence or a wall, because good fences do make good neighbors.
If you trust and forgive your someone too much it will only lead to more trouble, be cautious and learn to back away or reject a person if you are being mistreated, and if they really care or wants to be a good neighbor they will respect your thoughts and will learn they have said or done to you was wrong. A strong relationship requires quarrels and forgiveness, if either one is missing from this world, it would either be utopian or hell. So forgive and forget, but also learn from what has happened because day by day, year by year the wall in our lives will need to be mended.