This quote by Bjørnstjerne Bjørnson speaks with the value of friendship and how to keep it. It suggests that the best way to keep a good friend is to be one. This suggests that in order to have a strong and lasting friendship, both parties must want to put in the effort to be a good friend. This implies being helpful, understanding, and trusted. It also indicates being sincere and open with each other, and wanting to listen and offer suggestions when required. It likewise indicates wanting to jeopardize and make sacrifices for the sake of the friendship. In essence, it is about being a buddy to your friend, and not simply expecting them to be a good friend to you. By being a buddy, you can guarantee that your relationship will last and provide pleasure and convenience for both of you.
"Don't lower your expectations to meet your performance. Raise your level of performance to meet your expectations. Expect the best of yourself, and then do what is necessary to make it a reality"
"The man who makes everything that leads to happiness depends upon himself, and not upon other men, has adopted the very best plan for living happily. This is the man of moderation, the man of manly character and of wisdom"