The quote means, in order to have good friend, and or keep them, you need to be a good friend back.
"Do you think it is true?" is your own opinion, why or why not when writing your paragraph.
Example down below.
The quote, "In order to have good friends you have to be a good friend." means that you should be nice to your friend, and they will be nice to you. In my opinion (insert why or why not. My example will be on the next line.) I believe it is true because you should sustain a good relationship with your friend. Also, being a good person makes you a good person to everyone. Nobody would want someone who is mean towards them, and your still friend with them. In order to keep a friend, you must try hard at it. Trying hard in a relationship shows them that you care, and that you really want to stay friends.
I agree with the statement "In order to have good friends, you have to be a good friend", because if I want respect and kindness from someone, I assume that person would want respect and kindness from me. You have to treat people, how you would want to be treated, so if you want to have a good friend, you need to expect that they want the same. Being good towards others, and giving them respect, makes other people respect you, and be kind towards you. This saying reminds of another quote "Don't give an inch and expect a mile."