What make best friend?

I have many friends. Some with them are bests and different worse. I think that hard about best friend. Best friend possess many best attributes. Most important attribute for me is sincerity. With best friend is possible sincerely conversation. Every friend should have this attribute. Next attribute most important for friend is honesty.

Friend does not lie friend, he is very trustworthy person. Friend should be disinterested. Friend helps friend when he need aid. We can entrust friend every our secret having total certainty, that he not will say nobody about this. Best friend knows how to hear us. He is faithful and ready to help. In Polish language proverb is: we get to know true friends in poverty. I think it is truth. I hope, that some day I will meet kind of friend.